./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/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_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/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 64bit --witnessprinter.graph.data.programhash 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:56:59,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:56:59,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:56:59,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:56:59,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:56:59,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:56:59,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:56:59,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:56:59,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:56:59,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:56:59,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:56:59,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:56:59,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:56:59,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:56:59,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:56:59,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:56:59,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:56:59,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:56:59,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:56:59,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:56:59,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:56:59,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:56:59,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:56:59,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:56:59,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:56:59,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:56:59,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:56:59,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:56:59,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:56:59,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:56:59,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:56:59,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:56:59,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:56:59,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:56:59,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:56:59,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:56:59,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:56:59,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:56:59,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:56:59,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:56:59,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:56:59,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:56:59,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:56:59,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:56:59,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:56:59,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:56:59,789 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:56:59,790 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:56:59,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:56:59,791 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:56:59,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:56:59,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:56:59,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:56:59,792 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:56:59,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:56:59,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:56:59,794 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:56:59,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:56:59,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:56:59,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:56:59,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:56:59,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:56:59,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:56:59,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:56:59,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:56:59,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:56:59,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:56:59,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:56:59,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:56:59,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:56:59,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:56:59,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:56:59,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:56:59,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:56:59,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:56:59,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:56:59,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:56:59,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:56:59,811 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_05de0ed2-678f-43bb-823d-c22938bd2f08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2021-11-03 04:57:00,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:57:00,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:57:00,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:57:00,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:57:00,155 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:57:00,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 04:57:00,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/8318e770c/33216fe498094ebfa53812e1395d0305/FLAGde5f9bf10 [2021-11-03 04:57:01,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:57:01,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 04:57:01,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/8318e770c/33216fe498094ebfa53812e1395d0305/FLAGde5f9bf10 [2021-11-03 04:57:01,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/8318e770c/33216fe498094ebfa53812e1395d0305 [2021-11-03 04:57:01,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:57:01,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:57:01,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:01,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:57:01,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:57:01,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:01" (1/1) ... [2021-11-03 04:57:01,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29913861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:01, skipping insertion in model container [2021-11-03 04:57:01,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:01" (1/1) ... [2021-11-03 04:57:01,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:57:01,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:57:02,836 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,845 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,857 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,895 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,910 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,915 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,924 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,932 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,941 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,966 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:02,976 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,082 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,104 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,137 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,138 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,176 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,181 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,264 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,301 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,319 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,333 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,335 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,363 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,364 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,366 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,367 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,368 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,368 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,370 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,371 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,372 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,377 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,378 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,379 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:57:03,413 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_05de0ed2-678f-43bb-823d-c22938bd2f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-03 04:57:03,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:03,614 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:57:03,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31e84f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:03, skipping insertion in model container [2021-11-03 04:57:03,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:03,616 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:57:03,619 INFO L168 Benchmark]: Toolchain (without parser) took 2014.35 ms. Allocated memory was 81.8 MB in the beginning and 115.3 MB in the end (delta: 33.6 MB). Free memory was 54.3 MB in the beginning and 51.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:57:03,619 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:57:03,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2011.86 ms. Allocated memory was 81.8 MB in the beginning and 115.3 MB in the end (delta: 33.6 MB). Free memory was 54.0 MB in the beginning and 51.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:57:03,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2011.86 ms. Allocated memory was 81.8 MB in the beginning and 115.3 MB in the end (delta: 33.6 MB). Free memory was 54.0 MB in the beginning and 51.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3672]: 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_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/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_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/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 64bit --witnessprinter.graph.data.programhash 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:57:05,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:57:05,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:57:05,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:57:05,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:57:05,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:57:05,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:57:05,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:57:05,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:57:05,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:57:05,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:57:05,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:57:05,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:57:05,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:57:05,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:57:06,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:57:06,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:57:06,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:57:06,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:57:06,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:57:06,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:57:06,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:57:06,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:57:06,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:57:06,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:57:06,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:57:06,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:57:06,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:57:06,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:57:06,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:57:06,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:57:06,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:57:06,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:57:06,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:57:06,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:57:06,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:57:06,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:57:06,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:57:06,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:57:06,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:57:06,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:57:06,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:57:06,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:57:06,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:57:06,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:57:06,116 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:57:06,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:57:06,117 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:57:06,117 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:57:06,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:57:06,117 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:57:06,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:57:06,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:57:06,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:57:06,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:57:06,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:57:06,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:57:06,121 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:57:06,121 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:57:06,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:57:06,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:57:06,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:57:06,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:57:06,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:57:06,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:57:06,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:57:06,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:57:06,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:57:06,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:57:06,123 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:57:06,123 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:06,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:57:06,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:57:06,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:57:06,124 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_05de0ed2-678f-43bb-823d-c22938bd2f08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2021-11-03 04:57:06,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:57:06,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:57:06,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:57:06,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:57:06,567 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:57:06,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 04:57:06,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/8872e71bb/399f58148d0d49d2aae16b66409569d4/FLAG2f4688450 [2021-11-03 04:57:07,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:57:07,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 04:57:07,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/8872e71bb/399f58148d0d49d2aae16b66409569d4/FLAG2f4688450 [2021-11-03 04:57:08,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/data/8872e71bb/399f58148d0d49d2aae16b66409569d4 [2021-11-03 04:57:08,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:57:08,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:57:08,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:08,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:57:08,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:57:08,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:08" (1/1) ... [2021-11-03 04:57:08,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735722c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:08, skipping insertion in model container [2021-11-03 04:57:08,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:57:08" (1/1) ... [2021-11-03 04:57:08,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:57:08,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:57:10,232 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_05de0ed2-678f-43bb-823d-c22938bd2f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-03 04:57:10,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:10,420 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:57:10,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:57:10,835 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_05de0ed2-678f-43bb-823d-c22938bd2f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-03 04:57:10,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:10,923 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:57:11,296 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_05de0ed2-678f-43bb-823d-c22938bd2f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-03 04:57:11,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:57:11,459 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:57:11,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11 WrapperNode [2021-11-03 04:57:11,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:57:11,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:57:11,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:57:11,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:57:11,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:11,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:11,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:57:11,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:57:11,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:57:11,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:57:11,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:11,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:57:12,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:57:12,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:57:12,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:57:12,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (1/1) ... [2021-11-03 04:57:12,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:57:12,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:57:12,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:57:12,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:57:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:57:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:57:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-03 04:57:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:57:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:57:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:57:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:57:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:57:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:57:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:57:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:57:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:57:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 04:57:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:57:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:57:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:57:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:57:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:57:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:00:18,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:00:18,294 INFO L299 CfgBuilder]: Removed 1764 assume(true) statements. [2021-11-03 05:00:18,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:00:18 BoogieIcfgContainer [2021-11-03 05:00:18,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:00:18,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:00:18,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:00:18,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:00:18,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:57:08" (1/3) ... [2021-11-03 05:00:18,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b01517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:00:18, skipping insertion in model container [2021-11-03 05:00:18,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:57:11" (2/3) ... [2021-11-03 05:00:18,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b01517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:00:18, skipping insertion in model container [2021-11-03 05:00:18,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:00:18" (3/3) ... [2021-11-03 05:00:18,311 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-03 05:00:18,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:00:18,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-03 05:00:18,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:00:18,421 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 05:00:18,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-03 05:00:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 2037 states, 1965 states have (on average 1.4600508905852416) internal successors, (2869), 2036 states have internal predecessors, (2869), 0 states have call successors, (0), 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 05:00:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 05:00:18,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:00:18,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:00:18,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:00:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:00:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -107109679, now seen corresponding path program 1 times [2021-11-03 05:00:18,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:00:18,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048664779] [2021-11-03 05:00:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:00:18,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:00:18,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:00:18,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:00:18,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:00:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:00:33,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:00:33,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:00:34,329 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 05:00:34,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:00:34,811 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 05:00:34,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:00:34,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048664779] [2021-11-03 05:00:34,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048664779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:00:34,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:00:34,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:00:34,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707441775] [2021-11-03 05:00:34,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:00:34,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:00:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:00:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:00:34,856 INFO L87 Difference]: Start difference. First operand has 2037 states, 1965 states have (on average 1.4600508905852416) internal successors, (2869), 2036 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:00:35,009 INFO L93 Difference]: Finished difference Result 4070 states and 5733 transitions. [2021-11-03 05:00:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:00:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 05:00:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:00:35,053 INFO L225 Difference]: With dead ends: 4070 [2021-11-03 05:00:35,054 INFO L226 Difference]: Without dead ends: 2026 [2021-11-03 05:00:35,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:00:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-11-03 05:00:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2026. [2021-11-03 05:00:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1955 states have (on average 1.3943734015345268) internal successors, (2726), 2025 states have internal predecessors, (2726), 0 states have call successors, (0), 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 05:00:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2726 transitions. [2021-11-03 05:00:35,252 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2726 transitions. Word has length 74 [2021-11-03 05:00:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:00:35,253 INFO L470 AbstractCegarLoop]: Abstraction has 2026 states and 2726 transitions. [2021-11-03 05:00:35,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2726 transitions. [2021-11-03 05:00:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 05:00:35,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:00:35,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:00:35,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:00:35,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:00:35,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:00:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:00:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2011007137, now seen corresponding path program 1 times [2021-11-03 05:00:35,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:00:35,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150480764] [2021-11-03 05:00:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:00:35,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:00:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:00:35,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:00:35,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:00:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:00:50,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:00:50,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:00:51,406 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 05:00:51,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:00:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:00:51,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:00:51,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150480764] [2021-11-03 05:00:51,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150480764] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:00:51,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:00:51,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:00:51,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046713780] [2021-11-03 05:00:51,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:00:51,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:00:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:00:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:00:51,828 INFO L87 Difference]: Start difference. First operand 2026 states and 2726 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:00:52,442 INFO L93 Difference]: Finished difference Result 4027 states and 5441 transitions. [2021-11-03 05:00:52,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:00:52,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 05:00:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:00:52,459 INFO L225 Difference]: With dead ends: 4027 [2021-11-03 05:00:52,459 INFO L226 Difference]: Without dead ends: 2041 [2021-11-03 05:00:52,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 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 05:00:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2021-11-03 05:00:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2041. [2021-11-03 05:00:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1970 states have (on average 1.3913705583756346) internal successors, (2741), 2040 states have internal predecessors, (2741), 0 states have call successors, (0), 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 05:00:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2741 transitions. [2021-11-03 05:00:52,536 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2741 transitions. Word has length 74 [2021-11-03 05:00:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:00:52,537 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2741 transitions. [2021-11-03 05:00:52,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:00:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2741 transitions. [2021-11-03 05:00:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 05:00:52,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:00:52,541 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:52,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:00:52,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:00:52,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:00:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:00:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 13349022, now seen corresponding path program 1 times [2021-11-03 05:00:52,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:00:52,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055956174] [2021-11-03 05:00:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:00:52,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:00:52,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:00:52,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:00:52,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:01:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:06,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:01:07,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:01:07,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:01:08,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:01:08,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055956174] [2021-11-03 05:01:08,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055956174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:08,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [570417298] [2021-11-03 05:01:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:08,593 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:01:08,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:01:08,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:01:08,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:01:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:12,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:01:12,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:01:12,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:01:12,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [570417298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:12,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:01:12,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:01:12,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937806564] [2021-11-03 05:01:12,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:01:12,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:01:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:01:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:01:12,719 INFO L87 Difference]: Start difference. First operand 2041 states and 2741 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:16,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:16,426 INFO L93 Difference]: Finished difference Result 5435 states and 7318 transitions. [2021-11-03 05:01:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:01:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 05:01:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:16,453 INFO L225 Difference]: With dead ends: 5435 [2021-11-03 05:01:16,453 INFO L226 Difference]: Without dead ends: 3475 [2021-11-03 05:01:16,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:01:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2021-11-03 05:01:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3339. [2021-11-03 05:01:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3268 states have (on average 1.401468788249694) internal successors, (4580), 3338 states have internal predecessors, (4580), 0 states have call successors, (0), 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 05:01:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4580 transitions. [2021-11-03 05:01:16,595 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4580 transitions. Word has length 89 [2021-11-03 05:01:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:16,597 INFO L470 AbstractCegarLoop]: Abstraction has 3339 states and 4580 transitions. [2021-11-03 05:01:16,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4580 transitions. [2021-11-03 05:01:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 05:01:16,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:01:16,600 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:16,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:01:16,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:01:17,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:01:17,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:01:17,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2019292678, now seen corresponding path program 1 times [2021-11-03 05:01:17,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:01:17,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650292855] [2021-11-03 05:01:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:17,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:01:17,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:01:17,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:01:17,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:01:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:32,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:01:32,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:01:33,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:01:34,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:01:34,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650292855] [2021-11-03 05:01:34,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650292855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:34,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [224982846] [2021-11-03 05:01:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:34,107 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:01:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:01:34,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:01:34,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 05:01:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:38,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:01:38,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:01:38,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:01:38,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [224982846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:38,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:01:38,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:01:38,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485378587] [2021-11-03 05:01:38,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:01:38,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:01:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:01:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:01:38,586 INFO L87 Difference]: Start difference. First operand 3339 states and 4580 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 05:01:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:39,544 INFO L93 Difference]: Finished difference Result 8383 states and 11568 transitions. [2021-11-03 05:01:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:01:39,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 90 [2021-11-03 05:01:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:39,588 INFO L225 Difference]: With dead ends: 8383 [2021-11-03 05:01:39,588 INFO L226 Difference]: Without dead ends: 5125 [2021-11-03 05:01:39,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:01:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2021-11-03 05:01:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 5021. [2021-11-03 05:01:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 4950 states have (on average 1.417979797979798) internal successors, (7019), 5020 states have internal predecessors, (7019), 0 states have call successors, (0), 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 05:01:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7019 transitions. [2021-11-03 05:01:39,835 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7019 transitions. Word has length 90 [2021-11-03 05:01:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:39,836 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 7019 transitions. [2021-11-03 05:01:39,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 05:01:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7019 transitions. [2021-11-03 05:01:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:01:39,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:01:39,847 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:39,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:01:40,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-03 05:01:40,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:01:40,274 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:01:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash -299745556, now seen corresponding path program 1 times [2021-11-03 05:01:40,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:01:40,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198302651] [2021-11-03 05:01:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:40,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:01:40,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:01:40,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:01:40,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:01:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:57,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:01:57,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:01:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:01:57,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:01:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:01:58,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:01:58,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198302651] [2021-11-03 05:01:58,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198302651] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:01:58,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1553051468] [2021-11-03 05:01:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:58,832 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:01:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:01:58,833 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:01:58,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:02:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:02,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:02:02,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:02:03,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:02:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1553051468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:04,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:02:04,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:02:04,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890732772] [2021-11-03 05:02:04,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:02:04,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:04,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:02:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:02:04,379 INFO L87 Difference]: Start difference. First operand 5021 states and 7019 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 05:02:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:04,620 INFO L93 Difference]: Finished difference Result 5021 states and 7019 transitions. [2021-11-03 05:02:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:02:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 93 [2021-11-03 05:02:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:04,650 INFO L225 Difference]: With dead ends: 5021 [2021-11-03 05:02:04,650 INFO L226 Difference]: Without dead ends: 5009 [2021-11-03 05:02:04,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:02:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2021-11-03 05:02:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 5009. [2021-11-03 05:02:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5009 states, 4944 states have (on average 1.4158576051779934) internal successors, (7000), 5008 states have internal predecessors, (7000), 0 states have call successors, (0), 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 05:02:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 7000 transitions. [2021-11-03 05:02:04,971 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 7000 transitions. Word has length 93 [2021-11-03 05:02:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:04,975 INFO L470 AbstractCegarLoop]: Abstraction has 5009 states and 7000 transitions. [2021-11-03 05:02:04,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 05:02:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 7000 transitions. [2021-11-03 05:02:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 05:02:04,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:04,978 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:05,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:05,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:05,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:05,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:02:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash -702164839, now seen corresponding path program 1 times [2021-11-03 05:02:05,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:05,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862129266] [2021-11-03 05:02:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:05,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:05,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:05,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:05,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:02:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:20,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:02:20,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:02:21,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:02:21,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:21,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862129266] [2021-11-03 05:02:21,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862129266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:21,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603014562] [2021-11-03 05:02:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:21,864 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:21,872 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:21,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:02:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:25,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:02:25,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:02:26,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:02:27,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603014562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:27,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:02:27,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:02:27,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114366654] [2021-11-03 05:02:27,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:02:27,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:02:27,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:02:27,660 INFO L87 Difference]: Start difference. First operand 5009 states and 7000 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 05:02:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:28,585 INFO L93 Difference]: Finished difference Result 10866 states and 15238 transitions. [2021-11-03 05:02:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:02:28,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 94 [2021-11-03 05:02:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:28,627 INFO L225 Difference]: With dead ends: 10866 [2021-11-03 05:02:28,628 INFO L226 Difference]: Without dead ends: 5938 [2021-11-03 05:02:28,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:02:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2021-11-03 05:02:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 5908. [2021-11-03 05:02:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5908 states, 5853 states have (on average 1.4033828805740647) internal successors, (8214), 5907 states have internal predecessors, (8214), 0 states have call successors, (0), 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 05:02:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5908 states to 5908 states and 8214 transitions. [2021-11-03 05:02:28,899 INFO L78 Accepts]: Start accepts. Automaton has 5908 states and 8214 transitions. Word has length 94 [2021-11-03 05:02:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:28,899 INFO L470 AbstractCegarLoop]: Abstraction has 5908 states and 8214 transitions. [2021-11-03 05:02:28,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 05:02:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5908 states and 8214 transitions. [2021-11-03 05:02:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:02:28,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:28,901 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:28,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:29,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 05:02:29,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:29,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:02:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -292260714, now seen corresponding path program 1 times [2021-11-03 05:02:29,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:29,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424486031] [2021-11-03 05:02:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:29,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:29,325 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:29,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:02:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:44,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:02:44,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:02:45,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:02:46,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:46,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424486031] [2021-11-03 05:02:46,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424486031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:46,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146324888] [2021-11-03 05:02:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:46,283 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:46,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:46,284 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:46,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:02:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:50,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:02:50,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:02:51,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:02:52,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [146324888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:52,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:02:52,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:02:52,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624482826] [2021-11-03 05:02:52,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:02:52,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:02:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:02:52,116 INFO L87 Difference]: Start difference. First operand 5908 states and 8214 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:52,217 INFO L93 Difference]: Finished difference Result 5908 states and 8214 transitions. [2021-11-03 05:02:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:02:52,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:02:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:52,247 INFO L225 Difference]: With dead ends: 5908 [2021-11-03 05:02:52,247 INFO L226 Difference]: Without dead ends: 5901 [2021-11-03 05:02:52,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:02:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2021-11-03 05:02:52,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 5901. [2021-11-03 05:02:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 5847 states have (on average 1.4025996237386693) internal successors, (8201), 5900 states have internal predecessors, (8201), 0 states have call successors, (0), 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 05:02:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 8201 transitions. [2021-11-03 05:02:52,448 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 8201 transitions. Word has length 95 [2021-11-03 05:02:52,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:52,448 INFO L470 AbstractCegarLoop]: Abstraction has 5901 states and 8201 transitions. [2021-11-03 05:02:52,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:52,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 8201 transitions. [2021-11-03 05:02:52,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:02:52,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:52,450 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:52,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:52,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:52,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:52,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:02:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 431941352, now seen corresponding path program 1 times [2021-11-03 05:02:52,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:52,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877070408] [2021-11-03 05:02:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:52,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:52,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:52,872 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:52,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:03:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:07,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:03:07,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:03:08,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:03:09,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:09,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877070408] [2021-11-03 05:03:09,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877070408] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:09,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [414982115] [2021-11-03 05:03:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:09,073 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:09,074 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:03:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:13,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:03:13,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:03:13,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:03:13,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [414982115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:13,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:13,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:03:13,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139816256] [2021-11-03 05:03:13,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:03:13,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:03:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:13,992 INFO L87 Difference]: Start difference. First operand 5901 states and 8201 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 05:03:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:14,865 INFO L93 Difference]: Finished difference Result 16115 states and 22461 transitions. [2021-11-03 05:03:14,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:14,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 101 [2021-11-03 05:03:14,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:14,899 INFO L225 Difference]: With dead ends: 16115 [2021-11-03 05:03:14,899 INFO L226 Difference]: Without dead ends: 10295 [2021-11-03 05:03:14,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10295 states. [2021-11-03 05:03:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10295 to 10185. [2021-11-03 05:03:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10185 states, 10131 states have (on average 1.408054486230382) internal successors, (14265), 10184 states have internal predecessors, (14265), 0 states have call successors, (0), 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 05:03:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10185 states to 10185 states and 14265 transitions. [2021-11-03 05:03:15,248 INFO L78 Accepts]: Start accepts. Automaton has 10185 states and 14265 transitions. Word has length 101 [2021-11-03 05:03:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:15,248 INFO L470 AbstractCegarLoop]: Abstraction has 10185 states and 14265 transitions. [2021-11-03 05:03:15,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 05:03:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 10185 states and 14265 transitions. [2021-11-03 05:03:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 05:03:15,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:15,251 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:15,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:15,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:15,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:15,678 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:03:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1604070830, now seen corresponding path program 1 times [2021-11-03 05:03:15,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:15,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463847306] [2021-11-03 05:03:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:15,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:15,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:15,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:15,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:03:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:30,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:03:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:03:31,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:03:32,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:32,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463847306] [2021-11-03 05:03:32,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463847306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:32,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1398504179] [2021-11-03 05:03:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:32,454 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:32,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:32,455 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:32,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:03:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:36,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 3171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:03:36,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:03:37,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:03:37,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1398504179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:37,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:37,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:03:37,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631323405] [2021-11-03 05:03:37,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:03:37,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:03:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:37,631 INFO L87 Difference]: Start difference. First operand 10185 states and 14265 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 05:03:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:38,865 INFO L93 Difference]: Finished difference Result 28933 states and 40520 transitions. [2021-11-03 05:03:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:38,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 102 [2021-11-03 05:03:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:38,919 INFO L225 Difference]: With dead ends: 28933 [2021-11-03 05:03:38,919 INFO L226 Difference]: Without dead ends: 18829 [2021-11-03 05:03:38,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18829 states. [2021-11-03 05:03:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18829 to 18669. [2021-11-03 05:03:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 18615 states have (on average 1.4079505774912704) internal successors, (26209), 18668 states have internal predecessors, (26209), 0 states have call successors, (0), 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 05:03:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 26209 transitions. [2021-11-03 05:03:39,679 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 26209 transitions. Word has length 102 [2021-11-03 05:03:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:39,680 INFO L470 AbstractCegarLoop]: Abstraction has 18669 states and 26209 transitions. [2021-11-03 05:03:39,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 05:03:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 26209 transitions. [2021-11-03 05:03:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 05:03:39,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:39,682 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:39,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:39,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:40,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:40,094 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:03:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1595950027, now seen corresponding path program 1 times [2021-11-03 05:03:40,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:40,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039003302] [2021-11-03 05:03:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:40,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:40,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:40,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:40,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:03:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:55,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:03:55,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:03:55,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:03:56,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:56,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039003302] [2021-11-03 05:03:56,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039003302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:56,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113814072] [2021-11-03 05:03:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:56,678 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:56,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:56,686 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:56,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:04:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:00,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:04:00,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:04:01,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:04:01,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113814072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:01,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:04:01,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:04:01,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720279017] [2021-11-03 05:04:01,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:04:01,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:04:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:01,681 INFO L87 Difference]: Start difference. First operand 18669 states and 26209 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:04:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:03,078 INFO L93 Difference]: Finished difference Result 53335 states and 74918 transitions. [2021-11-03 05:04:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:04:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 103 [2021-11-03 05:04:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:03,180 INFO L225 Difference]: With dead ends: 53335 [2021-11-03 05:04:03,180 INFO L226 Difference]: Without dead ends: 34747 [2021-11-03 05:04:03,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34747 states. [2021-11-03 05:04:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34747 to 34605. [2021-11-03 05:04:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34605 states, 34551 states have (on average 1.4084975832826836) internal successors, (48665), 34604 states have internal predecessors, (48665), 0 states have call successors, (0), 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 05:04:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34605 states to 34605 states and 48665 transitions. [2021-11-03 05:04:04,635 INFO L78 Accepts]: Start accepts. Automaton has 34605 states and 48665 transitions. Word has length 103 [2021-11-03 05:04:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:04,636 INFO L470 AbstractCegarLoop]: Abstraction has 34605 states and 48665 transitions. [2021-11-03 05:04:04,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:04:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 34605 states and 48665 transitions. [2021-11-03 05:04:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 05:04:04,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:04,639 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:04,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:04,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:05,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:05,060 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:04:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash -297820779, now seen corresponding path program 1 times [2021-11-03 05:04:05,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:05,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337644902] [2021-11-03 05:04:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:05,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:05,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:05,068 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:05,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:04:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:20,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:04:20,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:04:21,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:04:22,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:22,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337644902] [2021-11-03 05:04:22,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337644902] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:22,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2005341134] [2021-11-03 05:04:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:22,686 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:04:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:04:22,687 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:04:22,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:04:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:04:27,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:04:27,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:04:28,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2005341134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:28,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:04:28,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:04:28,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233739293] [2021-11-03 05:04:28,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:04:28,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:04:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:28,281 INFO L87 Difference]: Start difference. First operand 34605 states and 48665 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:31,786 INFO L93 Difference]: Finished difference Result 69135 states and 97246 transitions. [2021-11-03 05:04:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:04:31,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-03 05:04:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:31,869 INFO L225 Difference]: With dead ends: 69135 [2021-11-03 05:04:31,869 INFO L226 Difference]: Without dead ends: 34595 [2021-11-03 05:04:31,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34595 states. [2021-11-03 05:04:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34595 to 34216. [2021-11-03 05:04:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34216 states, 34162 states have (on average 1.4109244189450267) internal successors, (48200), 34215 states have internal predecessors, (48200), 0 states have call successors, (0), 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 05:04:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34216 states to 34216 states and 48200 transitions. [2021-11-03 05:04:33,688 INFO L78 Accepts]: Start accepts. Automaton has 34216 states and 48200 transitions. Word has length 134 [2021-11-03 05:04:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:33,689 INFO L470 AbstractCegarLoop]: Abstraction has 34216 states and 48200 transitions. [2021-11-03 05:04:33,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34216 states and 48200 transitions. [2021-11-03 05:04:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-03 05:04:33,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:33,694 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:33,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:33,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-03 05:04:34,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:34,110 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:04:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1973488558, now seen corresponding path program 1 times [2021-11-03 05:04:34,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:34,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927596003] [2021-11-03 05:04:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:34,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:34,125 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:34,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:04:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:50,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:04:50,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 05:04:50,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 05:04:52,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:52,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927596003] [2021-11-03 05:04:52,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927596003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:52,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2057924742] [2021-11-03 05:04:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:52,037 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:04:52,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:04:52,038 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:04:52,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:04:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:56,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:04:56,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:04:56,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:04:57,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2057924742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:57,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:04:57,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:04:57,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225066274] [2021-11-03 05:04:57,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:04:57,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:04:57,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:57,231 INFO L87 Difference]: Start difference. First operand 34216 states and 48200 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 05:05:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:01,236 INFO L93 Difference]: Finished difference Result 68299 states and 96284 transitions. [2021-11-03 05:05:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:05:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 152 [2021-11-03 05:05:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:01,305 INFO L225 Difference]: With dead ends: 68299 [2021-11-03 05:05:01,306 INFO L226 Difference]: Without dead ends: 34164 [2021-11-03 05:05:01,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:05:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34164 states. [2021-11-03 05:05:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34164 to 33573. [2021-11-03 05:05:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33573 states, 33548 states have (on average 1.3956122570645046) internal successors, (46820), 33572 states have internal predecessors, (46820), 0 states have call successors, (0), 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 05:05:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33573 states to 33573 states and 46820 transitions. [2021-11-03 05:05:02,826 INFO L78 Accepts]: Start accepts. Automaton has 33573 states and 46820 transitions. Word has length 152 [2021-11-03 05:05:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:02,827 INFO L470 AbstractCegarLoop]: Abstraction has 33573 states and 46820 transitions. [2021-11-03 05:05:02,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 05:05:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33573 states and 46820 transitions. [2021-11-03 05:05:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-03 05:05:02,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:02,833 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:02,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:05:03,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:05:03,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:05:03,250 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:05:03,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash 59559302, now seen corresponding path program 1 times [2021-11-03 05:05:03,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:05:03,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302830932] [2021-11-03 05:05:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:03,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:05:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:05:03,259 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:05:03,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-03 05:05:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:20,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:05:20,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:05:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 05:05:20,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:05:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 05:05:22,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:05:22,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302830932] [2021-11-03 05:05:22,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302830932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:05:22,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [165173049] [2021-11-03 05:05:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:22,269 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:05:22,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:05:22,270 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:05:22,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-03 05:05:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:05:27,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:05:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:05:27,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:05:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:05:28,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [165173049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:28,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:05:28,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:05:28,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523657577] [2021-11-03 05:05:28,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:05:28,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:05:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:05:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:05:28,063 INFO L87 Difference]: Start difference. First operand 33573 states and 46820 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 05:05:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:31,739 INFO L93 Difference]: Finished difference Result 33573 states and 46820 transitions. [2021-11-03 05:05:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:05:31,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 158 [2021-11-03 05:05:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:31,807 INFO L225 Difference]: With dead ends: 33573 [2021-11-03 05:05:31,807 INFO L226 Difference]: Without dead ends: 33561 [2021-11-03 05:05:31,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:05:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2021-11-03 05:05:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 33561. [2021-11-03 05:05:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33561 states, 33542 states have (on average 1.3913898992308151) internal successors, (46670), 33560 states have internal predecessors, (46670), 0 states have call successors, (0), 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 05:05:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33561 states to 33561 states and 46670 transitions. [2021-11-03 05:05:33,062 INFO L78 Accepts]: Start accepts. Automaton has 33561 states and 46670 transitions. Word has length 158 [2021-11-03 05:05:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:33,063 INFO L470 AbstractCegarLoop]: Abstraction has 33561 states and 46670 transitions. [2021-11-03 05:05:33,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 05:05:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 33561 states and 46670 transitions. [2021-11-03 05:05:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 05:05:33,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:33,089 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:33,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-03 05:05:33,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:05:33,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:05:33,515 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:05:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash -607222255, now seen corresponding path program 1 times [2021-11-03 05:05:33,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:05:33,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491822620] [2021-11-03 05:05:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:33,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:05:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:05:33,522 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:05:33,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 05:05:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:50,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 3564 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:05:50,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:05:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:05:51,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:05:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:05:52,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:05:52,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491822620] [2021-11-03 05:05:52,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491822620] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:05:52,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [676749338] [2021-11-03 05:05:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:52,472 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:05:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:05:52,473 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:05:52,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-03 05:05:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:58,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3564 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:05:58,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:05:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:05:59,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:06:00,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [676749338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:00,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:06:00,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-03 05:06:00,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861922009] [2021-11-03 05:06:00,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:06:00,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:06:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:06:00,187 INFO L87 Difference]: Start difference. First operand 33561 states and 46670 transitions. Second operand has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 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 05:06:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:06,773 INFO L93 Difference]: Finished difference Result 67056 states and 93264 transitions. [2021-11-03 05:06:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:06:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 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 175 [2021-11-03 05:06:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:06,840 INFO L225 Difference]: With dead ends: 67056 [2021-11-03 05:06:06,841 INFO L226 Difference]: Without dead ends: 33573 [2021-11-03 05:06:06,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:06:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33573 states. [2021-11-03 05:06:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33573 to 33564. [2021-11-03 05:06:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33564 states, 33545 states have (on average 1.3913250857057684) internal successors, (46672), 33563 states have internal predecessors, (46672), 0 states have call successors, (0), 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 05:06:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33564 states to 33564 states and 46672 transitions. [2021-11-03 05:06:08,169 INFO L78 Accepts]: Start accepts. Automaton has 33564 states and 46672 transitions. Word has length 175 [2021-11-03 05:06:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:08,169 INFO L470 AbstractCegarLoop]: Abstraction has 33564 states and 46672 transitions. [2021-11-03 05:06:08,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 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 05:06:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 33564 states and 46672 transitions. [2021-11-03 05:06:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 05:06:08,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:08,197 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:08,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:08,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-03 05:06:08,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:06:08,621 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:06:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash -580156653, now seen corresponding path program 1 times [2021-11-03 05:06:08,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:08,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896723520] [2021-11-03 05:06:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:08,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:08,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:08,630 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:08,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 05:06:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:25,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:06:25,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:06:26,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:06:27,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:27,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896723520] [2021-11-03 05:06:27,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896723520] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:06:27,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598121677] [2021-11-03 05:06:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:27,949 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:06:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:06:27,958 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:06:27,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-03 05:06:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:06:33,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:06:33,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:06:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:06:34,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:06:35,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1598121677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:35,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:06:35,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-03 05:06:35,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669035623] [2021-11-03 05:06:35,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:06:35,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:06:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:06:35,335 INFO L87 Difference]: Start difference. First operand 33564 states and 46672 transitions. Second operand has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 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 05:06:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:06:48,183 INFO L93 Difference]: Finished difference Result 164663 states and 229256 transitions. [2021-11-03 05:06:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:06:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 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 175 [2021-11-03 05:06:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:06:48,413 INFO L225 Difference]: With dead ends: 164663 [2021-11-03 05:06:48,413 INFO L226 Difference]: Without dead ends: 131180 [2021-11-03 05:06:48,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:06:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131180 states. [2021-11-03 05:06:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131180 to 33596. [2021-11-03 05:06:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33596 states, 33577 states have (on average 1.3904756231944486) internal successors, (46688), 33595 states have internal predecessors, (46688), 0 states have call successors, (0), 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 05:06:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33596 states to 33596 states and 46688 transitions. [2021-11-03 05:06:51,538 INFO L78 Accepts]: Start accepts. Automaton has 33596 states and 46688 transitions. Word has length 175 [2021-11-03 05:06:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:06:51,539 INFO L470 AbstractCegarLoop]: Abstraction has 33596 states and 46688 transitions. [2021-11-03 05:06:51,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 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 05:06:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 33596 states and 46688 transitions. [2021-11-03 05:06:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-03 05:06:51,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:06:51,561 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:51,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-03 05:06:51,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-03 05:06:51,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:06:51,978 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:06:51,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:06:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1166542393, now seen corresponding path program 1 times [2021-11-03 05:06:51,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:06:51,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546100090] [2021-11-03 05:06:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:06:51,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:06:51,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:06:51,987 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:06:51,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-03 05:07:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:09,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3590 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:07:09,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:07:10,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:07:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:07:12,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:07:12,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546100090] [2021-11-03 05:07:12,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546100090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:07:12,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1212089000] [2021-11-03 05:07:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:12,270 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:07:12,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:07:12,282 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:07:12,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-03 05:07:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:17,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3590 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:07:17,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:07:17,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:07:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:07:17,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1212089000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:17,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:07:17,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:07:17,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608049993] [2021-11-03 05:07:17,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:07:17,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:07:17,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:07:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:07:17,952 INFO L87 Difference]: Start difference. First operand 33596 states and 46688 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 05:07:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:07:22,772 INFO L93 Difference]: Finished difference Result 93458 states and 130150 transitions. [2021-11-03 05:07:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:07:22,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 177 [2021-11-03 05:07:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:07:22,850 INFO L225 Difference]: With dead ends: 93458 [2021-11-03 05:07:22,850 INFO L226 Difference]: Without dead ends: 59943 [2021-11-03 05:07:22,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:07:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59943 states. [2021-11-03 05:07:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59943 to 33628. [2021-11-03 05:07:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33628 states, 33609 states have (on average 1.3900740872980453) internal successors, (46719), 33627 states have internal predecessors, (46719), 0 states have call successors, (0), 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 05:07:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33628 states to 33628 states and 46719 transitions. [2021-11-03 05:07:24,935 INFO L78 Accepts]: Start accepts. Automaton has 33628 states and 46719 transitions. Word has length 177 [2021-11-03 05:07:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:07:24,935 INFO L470 AbstractCegarLoop]: Abstraction has 33628 states and 46719 transitions. [2021-11-03 05:07:24,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 05:07:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 33628 states and 46719 transitions. [2021-11-03 05:07:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-03 05:07:24,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:07:24,951 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:25,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-03 05:07:25,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-03 05:07:25,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:07:25,352 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:07:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:07:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1413252415, now seen corresponding path program 1 times [2021-11-03 05:07:25,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:07:25,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45020321] [2021-11-03 05:07:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:25,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:07:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:07:25,358 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:07:25,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-03 05:07:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:42,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 3597 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:07:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:07:43,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:07:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:07:44,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:07:44,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45020321] [2021-11-03 05:07:44,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45020321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:07:44,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1280220589] [2021-11-03 05:07:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:07:44,592 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:07:44,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:07:44,593 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:07:44,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-03 05:07:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:07:50,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 3597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:07:50,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:07:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:07:51,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:07:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:07:52,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1280220589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:07:52,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:07:52,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-03 05:07:52,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852775136] [2021-11-03 05:07:52,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:07:52,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:07:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:07:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:07:52,045 INFO L87 Difference]: Start difference. First operand 33628 states and 46719 transitions. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 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 05:08:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:06,789 INFO L93 Difference]: Finished difference Result 161942 states and 225270 transitions. [2021-11-03 05:08:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:08:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 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 181 [2021-11-03 05:08:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:07,221 INFO L225 Difference]: With dead ends: 161942 [2021-11-03 05:08:07,222 INFO L226 Difference]: Without dead ends: 128395 [2021-11-03 05:08:07,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:08:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128395 states. [2021-11-03 05:08:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128395 to 33637. [2021-11-03 05:08:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33637 states, 33619 states have (on average 1.3892441773996846) internal successors, (46705), 33636 states have internal predecessors, (46705), 0 states have call successors, (0), 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 05:08:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33637 states to 33637 states and 46705 transitions. [2021-11-03 05:08:10,404 INFO L78 Accepts]: Start accepts. Automaton has 33637 states and 46705 transitions. Word has length 181 [2021-11-03 05:08:10,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:10,404 INFO L470 AbstractCegarLoop]: Abstraction has 33637 states and 46705 transitions. [2021-11-03 05:08:10,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 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 05:08:10,405 INFO L276 IsEmpty]: Start isEmpty. Operand 33637 states and 46705 transitions. [2021-11-03 05:08:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-03 05:08:10,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:10,446 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:10,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:10,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-03 05:08:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:10,866 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:08:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 744555474, now seen corresponding path program 1 times [2021-11-03 05:08:10,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:10,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153850086] [2021-11-03 05:08:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:10,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:10,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:10,874 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:10,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-03 05:08:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:29,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3807 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:08:29,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 05:08:30,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 05:08:31,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:08:31,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153850086] [2021-11-03 05:08:31,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153850086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:08:31,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [547272160] [2021-11-03 05:08:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:31,714 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:31,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:08:31,714 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:08:31,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-03 05:08:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:08:37,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 3807 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:08:37,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:08:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:08:38,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:08:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:08:38,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [547272160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:08:38,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:08:38,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:08:38,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621207944] [2021-11-03 05:08:38,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:08:38,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:08:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:08:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:08:38,877 INFO L87 Difference]: Start difference. First operand 33637 states and 46705 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 05:08:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:08:50,100 INFO L93 Difference]: Finished difference Result 100429 states and 139455 transitions. [2021-11-03 05:08:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:08:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 217 [2021-11-03 05:08:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:08:50,188 INFO L225 Difference]: With dead ends: 100429 [2021-11-03 05:08:50,188 INFO L226 Difference]: Without dead ends: 66873 [2021-11-03 05:08:50,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:08:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66873 states. [2021-11-03 05:08:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66873 to 34085. [2021-11-03 05:08:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34085 states, 34067 states have (on average 1.390700678075557) internal successors, (47377), 34084 states have internal predecessors, (47377), 0 states have call successors, (0), 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 05:08:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34085 states to 34085 states and 47377 transitions. [2021-11-03 05:08:52,709 INFO L78 Accepts]: Start accepts. Automaton has 34085 states and 47377 transitions. Word has length 217 [2021-11-03 05:08:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:08:52,710 INFO L470 AbstractCegarLoop]: Abstraction has 34085 states and 47377 transitions. [2021-11-03 05:08:52,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 05:08:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 34085 states and 47377 transitions. [2021-11-03 05:08:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-03 05:08:52,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:08:52,734 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:52,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:53,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-03 05:08:53,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:08:53,135 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:08:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:08:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1871800953, now seen corresponding path program 1 times [2021-11-03 05:08:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:08:53,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933100125] [2021-11-03 05:08:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:08:53,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:08:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:08:53,141 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:08:53,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-03 05:09:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 3828 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:09:10,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 05:09:11,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 05:09:12,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933100125] [2021-11-03 05:09:12,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933100125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902697688] [2021-11-03 05:09:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:12,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:12,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:12,999 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:13,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-03 05:09:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:18,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 3828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:09:18,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:09:19,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:09:19,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1902697688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:19,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:09:19,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:09:19,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169335556] [2021-11-03 05:09:19,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:09:19,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:19,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:09:19,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:09:19,631 INFO L87 Difference]: Start difference. First operand 34085 states and 47377 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 05:09:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:25,509 INFO L93 Difference]: Finished difference Result 101965 states and 141759 transitions. [2021-11-03 05:09:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:09:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 219 [2021-11-03 05:09:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:25,595 INFO L225 Difference]: With dead ends: 101965 [2021-11-03 05:09:25,595 INFO L226 Difference]: Without dead ends: 67961 [2021-11-03 05:09:25,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:09:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67961 states. [2021-11-03 05:09:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67961 to 35045. [2021-11-03 05:09:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35045 states, 35027 states have (on average 1.394609872384161) internal successors, (48849), 35044 states have internal predecessors, (48849), 0 states have call successors, (0), 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 05:09:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35045 states to 35045 states and 48849 transitions. [2021-11-03 05:09:28,267 INFO L78 Accepts]: Start accepts. Automaton has 35045 states and 48849 transitions. Word has length 219 [2021-11-03 05:09:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:28,268 INFO L470 AbstractCegarLoop]: Abstraction has 35045 states and 48849 transitions. [2021-11-03 05:09:28,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 05:09:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 35045 states and 48849 transitions. [2021-11-03 05:09:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-03 05:09:28,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:28,301 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:28,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:28,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-03 05:09:28,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:09:28,710 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-03 05:09:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1944187511, now seen corresponding path program 1 times [2021-11-03 05:09:28,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:28,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649968593] [2021-11-03 05:09:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:28,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:28,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:28,716 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:28,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-03 05:09:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:45,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 3828 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:09:45,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 05:09:46,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 05:09:48,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:09:48,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649968593] [2021-11-03 05:09:48,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649968593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:09:48,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [135118142] [2021-11-03 05:09:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:48,083 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:09:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:09:48,084 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:09:48,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05de0ed2-678f-43bb-823d-c22938bd2f08/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-11-03 05:09:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:54,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3828 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:09:54,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:09:54,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:09:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 05:09:55,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [135118142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:09:55,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:09:55,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:09:55,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186313932] [2021-11-03 05:09:55,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:09:55,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:09:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:09:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:09:55,099 INFO L87 Difference]: Start difference. First operand 35045 states and 48849 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 05:10:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:02,132 INFO L93 Difference]: Finished difference Result 135467 states and 188850 transitions. [2021-11-03 05:10:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:10:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 219 [2021-11-03 05:10:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:02,300 INFO L225 Difference]: With dead ends: 135467 [2021-11-03 05:10:02,300 INFO L226 Difference]: Without dead ends: 100503