./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c88cc194103d022b94f7566a6fbb0060b2ca3bc51aa069da2e93bf3455dff41 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:31:30,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:31:30,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:31:30,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:31:30,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:31:30,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:31:30,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:31:30,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:31:30,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:31:30,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:31:30,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:31:30,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:31:30,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:31:30,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:31:30,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:31:30,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:31:30,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:31:30,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:31:30,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:31:30,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:31:30,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:31:30,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:31:30,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:31:30,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:31:30,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:31:30,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:31:30,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:31:30,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:31:30,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:31:30,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:31:30,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:31:30,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:31:30,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:31:30,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:31:30,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:31:30,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:31:30,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:31:30,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:31:30,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:31:30,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:31:30,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:31:30,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:31:30,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:31:30,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:31:30,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:31:30,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:31:30,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:31:30,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:31:30,760 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:31:30,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:31:30,761 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:31:30,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:31:30,762 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:31:30,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:31:30,763 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:31:30,763 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:31:30,763 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:31:30,764 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:31:30,764 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:31:30,764 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:31:30,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:31:30,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:31:30,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:31:30,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:31:30,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:31:30,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:31:30,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:31:30,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:31:30,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:31:30,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:31:30,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:31:30,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:31:30,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:31:30,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:31:30,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:31:30,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:31:30,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:31:30,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:31:30,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:31:30,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:31:30,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:31:30,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:31:30,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:31:30,772 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_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c88cc194103d022b94f7566a6fbb0060b2ca3bc51aa069da2e93bf3455dff41 [2021-11-23 02:31:31,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:31:31,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:31:31,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:31:31,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:31:31,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:31:31,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2021-11-23 02:31:31,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/data/11d7bacd0/b45f1a972d334d2b88ec71045592f0b9/FLAGe77a01e64 [2021-11-23 02:31:31,833 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:31:31,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2021-11-23 02:31:31,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/data/11d7bacd0/b45f1a972d334d2b88ec71045592f0b9/FLAGe77a01e64 [2021-11-23 02:31:32,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/data/11d7bacd0/b45f1a972d334d2b88ec71045592f0b9 [2021-11-23 02:31:32,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:31:32,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:31:32,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:31:32,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:31:32,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:31:32,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccd483e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32, skipping insertion in model container [2021-11-23 02:31:32,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:31:32,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:31:32,595 WARN L230 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_56787c7c-d6d5-41ff-8709-7b412685d5c2/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2021-11-23 02:31:32,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:32,644 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:31:32,763 WARN L230 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_56787c7c-d6d5-41ff-8709-7b412685d5c2/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2021-11-23 02:31:32,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:32,791 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:31:32,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32 WrapperNode [2021-11-23 02:31:32,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:31:32,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:31:32,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:31:32,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:31:32,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,898 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2021-11-23 02:31:32,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:31:32,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:31:32,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:31:32,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:31:32,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:32,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:31:32,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:31:32,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:31:32,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:31:32,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (1/1) ... [2021-11-23 02:31:33,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:31:33,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:33,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:31:33,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:31:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:31:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:31:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:31:33,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:31:33,287 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:31:33,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:31:34,224 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:31:34,419 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:31:34,419 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:31:34,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:34 BoogieIcfgContainer [2021-11-23 02:31:34,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:31:34,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:31:34,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:31:34,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:31:34,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:31:32" (1/3) ... [2021-11-23 02:31:34,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b8028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:34, skipping insertion in model container [2021-11-23 02:31:34,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:32" (2/3) ... [2021-11-23 02:31:34,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b8028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:34, skipping insertion in model container [2021-11-23 02:31:34,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:34" (3/3) ... [2021-11-23 02:31:34,432 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2021-11-23 02:31:34,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:31:34,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:31:34,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:31:34,502 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 [2021-11-23 02:31:34,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:31:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:31:34,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:34,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:34,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash 379028615, now seen corresponding path program 1 times [2021-11-23 02:31:34,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:34,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190162552] [2021-11-23 02:31:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:34,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:34,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:34,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190162552] [2021-11-23 02:31:34,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190162552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:34,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:34,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:31:34,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185229870] [2021-11-23 02:31:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:34,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:34,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:34,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:34,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:34,995 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 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 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:35,511 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-23 02:31:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:35,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-23 02:31:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:35,534 INFO L225 Difference]: With dead ends: 224 [2021-11-23 02:31:35,534 INFO L226 Difference]: Without dead ends: 145 [2021-11-23 02:31:35,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:35,544 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:35,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:31:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-23 02:31:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-23 02:31:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-11-23 02:31:35,620 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-11-23 02:31:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:35,621 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-11-23 02:31:35,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-11-23 02:31:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:31:35,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:35,625 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:31:35,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:31:35,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1708135615, now seen corresponding path program 1 times [2021-11-23 02:31:35,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:35,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723192100] [2021-11-23 02:31:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:35,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:35,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:35,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723192100] [2021-11-23 02:31:35,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723192100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:35,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:35,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:31:35,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350074836] [2021-11-23 02:31:35,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:35,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:35,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:35,722 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 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) [2021-11-23 02:31:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:36,097 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-11-23 02:31:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:36,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-23 02:31:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:36,103 INFO L225 Difference]: With dead ends: 431 [2021-11-23 02:31:36,104 INFO L226 Difference]: Without dead ends: 287 [2021-11-23 02:31:36,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:36,113 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:36,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:31:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-23 02:31:36,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-23 02:31:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6783216783216783) internal successors, (480), 286 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2021-11-23 02:31:36,144 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2021-11-23 02:31:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:36,145 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2021-11-23 02:31:36,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 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) [2021-11-23 02:31:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2021-11-23 02:31:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:31:36,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:36,154 INFO L514 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] [2021-11-23 02:31:36,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:31:36,154 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -180170699, now seen corresponding path program 1 times [2021-11-23 02:31:36,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:36,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197890219] [2021-11-23 02:31:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:36,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:36,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197890219] [2021-11-23 02:31:36,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197890219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:36,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:36,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:31:36,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770853281] [2021-11-23 02:31:36,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:36,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:36,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:36,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:36,229 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:36,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:36,661 INFO L93 Difference]: Finished difference Result 786 states and 1318 transitions. [2021-11-23 02:31:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:36,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 02:31:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:36,665 INFO L225 Difference]: With dead ends: 786 [2021-11-23 02:31:36,665 INFO L226 Difference]: Without dead ends: 500 [2021-11-23 02:31:36,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:36,669 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:36,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 15 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:31:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-23 02:31:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-11-23 02:31:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.629258517034068) internal successors, (813), 499 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 813 transitions. [2021-11-23 02:31:36,706 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 813 transitions. Word has length 80 [2021-11-23 02:31:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:36,707 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 813 transitions. [2021-11-23 02:31:36,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 813 transitions. [2021-11-23 02:31:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 02:31:36,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:36,711 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-11-23 02:31:36,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:31:36,712 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:36,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash 714047334, now seen corresponding path program 1 times [2021-11-23 02:31:36,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:36,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612961373] [2021-11-23 02:31:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:36,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:36,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:36,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612961373] [2021-11-23 02:31:36,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612961373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:36,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:36,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:31:36,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715714770] [2021-11-23 02:31:36,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:36,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:36,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:36,796 INFO L87 Difference]: Start difference. First operand 500 states and 813 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:37,100 INFO L93 Difference]: Finished difference Result 1212 states and 1934 transitions. [2021-11-23 02:31:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-23 02:31:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:37,108 INFO L225 Difference]: With dead ends: 1212 [2021-11-23 02:31:37,108 INFO L226 Difference]: Without dead ends: 713 [2021-11-23 02:31:37,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:37,122 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:37,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:31:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-23 02:31:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-11-23 02:31:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.546021840873635) internal successors, (991), 641 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 991 transitions. [2021-11-23 02:31:37,151 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 991 transitions. Word has length 86 [2021-11-23 02:31:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:37,151 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 991 transitions. [2021-11-23 02:31:37,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 991 transitions. [2021-11-23 02:31:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:31:37,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:37,155 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:31:37,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:31:37,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 763856630, now seen corresponding path program 1 times [2021-11-23 02:31:37,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:37,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614840975] [2021-11-23 02:31:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:37,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:31:37,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:37,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614840975] [2021-11-23 02:31:37,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614840975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:37,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:37,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:31:37,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832367264] [2021-11-23 02:31:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:37,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:37,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:37,211 INFO L87 Difference]: Start difference. First operand 642 states and 991 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:37,523 INFO L93 Difference]: Finished difference Result 1425 states and 2214 transitions. [2021-11-23 02:31:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-23 02:31:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:37,528 INFO L225 Difference]: With dead ends: 1425 [2021-11-23 02:31:37,528 INFO L226 Difference]: Without dead ends: 784 [2021-11-23 02:31:37,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:37,531 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:37,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 62 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:31:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-11-23 02:31:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2021-11-23 02:31:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4865900383141764) internal successors, (1164), 783 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1164 transitions. [2021-11-23 02:31:37,555 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1164 transitions. Word has length 87 [2021-11-23 02:31:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:37,555 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1164 transitions. [2021-11-23 02:31:37,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1164 transitions. [2021-11-23 02:31:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 02:31:37,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:37,558 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2021-11-23 02:31:37,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:31:37,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2013605330, now seen corresponding path program 1 times [2021-11-23 02:31:37,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:37,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474504907] [2021-11-23 02:31:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:37,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:37,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:37,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474504907] [2021-11-23 02:31:37,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474504907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:37,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:37,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:31:37,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930780918] [2021-11-23 02:31:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:37,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:37,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:37,620 INFO L87 Difference]: Start difference. First operand 784 states and 1164 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:38,117 INFO L93 Difference]: Finished difference Result 1780 states and 2594 transitions. [2021-11-23 02:31:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:38,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2021-11-23 02:31:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:38,133 INFO L225 Difference]: With dead ends: 1780 [2021-11-23 02:31:38,134 INFO L226 Difference]: Without dead ends: 997 [2021-11-23 02:31:38,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:38,136 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:38,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 54 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:31:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-23 02:31:38,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-11-23 02:31:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.4313513513513514) internal successors, (1324), 925 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1324 transitions. [2021-11-23 02:31:38,173 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1324 transitions. Word has length 90 [2021-11-23 02:31:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:38,174 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1324 transitions. [2021-11-23 02:31:38,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1324 transitions. [2021-11-23 02:31:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 02:31:38,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:38,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:31:38,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:31:38,177 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash 683585647, now seen corresponding path program 1 times [2021-11-23 02:31:38,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:38,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671102227] [2021-11-23 02:31:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:38,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-23 02:31:38,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671102227] [2021-11-23 02:31:38,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671102227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:38,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:38,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:31:38,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244654803] [2021-11-23 02:31:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:38,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:38,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:38,289 INFO L87 Difference]: Start difference. First operand 926 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:38,583 INFO L93 Difference]: Finished difference Result 1141 states and 1604 transitions. [2021-11-23 02:31:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:38,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-23 02:31:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:38,599 INFO L225 Difference]: With dead ends: 1141 [2021-11-23 02:31:38,599 INFO L226 Difference]: Without dead ends: 1139 [2021-11-23 02:31:38,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:38,601 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:38,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:31:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-23 02:31:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 855. [2021-11-23 02:31:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4437939110070257) internal successors, (1233), 854 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1233 transitions. [2021-11-23 02:31:38,650 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1233 transitions. Word has length 108 [2021-11-23 02:31:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:38,651 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1233 transitions. [2021-11-23 02:31:38,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1233 transitions. [2021-11-23 02:31:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-23 02:31:38,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:38,655 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:31:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:31:38,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash -280550472, now seen corresponding path program 1 times [2021-11-23 02:31:38,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:38,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995884961] [2021-11-23 02:31:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:38,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-23 02:31:38,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:38,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995884961] [2021-11-23 02:31:38,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995884961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:38,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:38,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:31:38,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261245176] [2021-11-23 02:31:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:38,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:38,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:38,804 INFO L87 Difference]: Start difference. First operand 855 states and 1233 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:39,302 INFO L93 Difference]: Finished difference Result 1851 states and 2631 transitions. [2021-11-23 02:31:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:39,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 176 [2021-11-23 02:31:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:39,307 INFO L225 Difference]: With dead ends: 1851 [2021-11-23 02:31:39,307 INFO L226 Difference]: Without dead ends: 997 [2021-11-23 02:31:39,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:39,309 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 102 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:39,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 38 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:31:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-23 02:31:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2021-11-23 02:31:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.373536299765808) internal successors, (1173), 854 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1173 transitions. [2021-11-23 02:31:39,355 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1173 transitions. Word has length 176 [2021-11-23 02:31:39,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:39,356 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1173 transitions. [2021-11-23 02:31:39,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1173 transitions. [2021-11-23 02:31:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-23 02:31:39,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:39,361 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-11-23 02:31:39,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:31:39,361 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash -915522632, now seen corresponding path program 1 times [2021-11-23 02:31:39,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:39,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203272665] [2021-11-23 02:31:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:39,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-23 02:31:39,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203272665] [2021-11-23 02:31:39,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203272665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:39,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:39,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:31:39,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471743889] [2021-11-23 02:31:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:39,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:39,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:39,459 INFO L87 Difference]: Start difference. First operand 855 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:39,770 INFO L93 Difference]: Finished difference Result 1851 states and 2511 transitions. [2021-11-23 02:31:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 [2021-11-23 02:31:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:39,777 INFO L225 Difference]: With dead ends: 1851 [2021-11-23 02:31:39,777 INFO L226 Difference]: Without dead ends: 997 [2021-11-23 02:31:39,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:39,779 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:39,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 124 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:31:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-23 02:31:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-11-23 02:31:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2929729729729729) internal successors, (1196), 925 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1196 transitions. [2021-11-23 02:31:39,806 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1196 transitions. Word has length 219 [2021-11-23 02:31:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:39,807 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1196 transitions. [2021-11-23 02:31:39,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1196 transitions. [2021-11-23 02:31:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-23 02:31:39,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:39,812 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-11-23 02:31:39,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:31:39,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1896312719, now seen corresponding path program 1 times [2021-11-23 02:31:39,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:39,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504664178] [2021-11-23 02:31:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:39,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:31:40,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:40,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504664178] [2021-11-23 02:31:40,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504664178] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:31:40,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251028437] [2021-11-23 02:31:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:40,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:40,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:40,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:31:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:40,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:31:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-23 02:31:40,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:31:40,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251028437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:40,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:31:40,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-23 02:31:40,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725398848] [2021-11-23 02:31:40,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:40,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:40,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:40,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:31:40,715 INFO L87 Difference]: Start difference. First operand 926 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:41,051 INFO L93 Difference]: Finished difference Result 2062 states and 2651 transitions. [2021-11-23 02:31:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 241 [2021-11-23 02:31:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:41,052 INFO L225 Difference]: With dead ends: 2062 [2021-11-23 02:31:41,052 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:31:41,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:31:41,057 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:41,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:31:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:31:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:31:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:31:41,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2021-11-23 02:31:41,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:41,061 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:31:41,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:31:41,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:31:41,076 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:31:41,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:41,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:31:41,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:31:41,970 INFO L858 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2021-11-23 02:31:41,970 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-23 02:31:41,970 INFO L858 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-23 02:31:41,971 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-23 02:31:41,971 INFO L858 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-23 02:31:41,971 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-23 02:31:41,971 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-23 02:31:41,971 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-23 02:31:41,971 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-23 02:31:41,972 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-23 02:31:41,972 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-23 02:31:41,972 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-23 02:31:41,973 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-23 02:31:41,973 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-23 02:31:41,973 INFO L858 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-23 02:31:41,973 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-23 02:31:41,974 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-23 02:31:41,975 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-23 02:31:41,975 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-23 02:31:41,975 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-23 02:31:41,975 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-23 02:31:41,975 INFO L858 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-23 02:31:41,975 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-23 02:31:41,976 INFO L858 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-23 02:31:41,977 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-23 02:31:41,977 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:31:41,979 INFO L858 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-23 02:31:41,979 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-23 02:31:41,980 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-23 02:31:41,981 INFO L854 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse1 (<= ~a16~0 5)) (.cse0 (= ~a21~0 1)) (.cse3 (<= 15 ~a8~0)) (.cse4 (<= ~a8~0 13)) (.cse5 (= ~a16~0 6))) (or (and .cse0 .cse1) (and .cse0 (= ~a17~0 1) .cse2) (and .cse0 .cse2 .cse3) (and .cse4 .cse1) (and .cse5 .cse0 .cse3) (and .cse4 .cse5))) [2021-11-23 02:31:41,981 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-23 02:31:41,981 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-23 02:31:41,981 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-23 02:31:41,982 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-23 02:31:41,982 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-23 02:31:41,982 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-23 02:31:41,982 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-23 02:31:41,982 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:31:41,982 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-23 02:31:41,983 INFO L861 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-23 02:31:41,983 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-23 02:31:41,984 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-23 02:31:41,984 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-23 02:31:41,984 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-23 02:31:41,984 INFO L858 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-23 02:31:41,984 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-23 02:31:41,985 INFO L858 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-23 02:31:41,985 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-23 02:31:41,985 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-23 02:31:41,985 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-23 02:31:41,985 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-23 02:31:41,985 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-23 02:31:41,986 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-23 02:31:41,987 INFO L858 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-11-23 02:31:41,987 INFO L854 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse1 (<= ~a16~0 5)) (.cse0 (= ~a21~0 1)) (.cse3 (<= 15 ~a8~0)) (.cse4 (<= ~a8~0 13)) (.cse5 (= ~a16~0 6))) (or (and .cse0 .cse1) (and .cse0 (= ~a17~0 1) .cse2) (and .cse0 .cse2 .cse3) (and .cse4 .cse1) (and .cse5 .cse0 .cse3) (and .cse4 .cse5))) [2021-11-23 02:31:41,987 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-23 02:31:41,988 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 564) no Hoare annotation was computed. [2021-11-23 02:31:41,988 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-23 02:31:41,988 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-23 02:31:41,988 INFO L858 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-11-23 02:31:41,988 INFO L858 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-23 02:31:41,989 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-23 02:31:41,989 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-23 02:31:41,989 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-23 02:31:41,993 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:41,996 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:31:42,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:31:42 BoogieIcfgContainer [2021-11-23 02:31:42,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:31:42,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:31:42,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:31:42,043 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:31:42,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:34" (3/4) ... [2021-11-23 02:31:42,050 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:31:42,086 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2021-11-23 02:31:42,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-23 02:31:42,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-23 02:31:42,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:31:42,244 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:31:42,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:31:42,246 INFO L158 Benchmark]: Toolchain (without parser) took 10193.92ms. Allocated memory was 104.9MB in the beginning and 245.4MB in the end (delta: 140.5MB). Free memory was 68.3MB in the beginning and 156.0MB in the end (delta: -87.7MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,246 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 76.2MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:31:42,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 739.91ms. Allocated memory is still 104.9MB. Free memory was 68.1MB in the beginning and 61.7MB in the end (delta: 6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.41ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 56.1MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,247 INFO L158 Benchmark]: Boogie Preprocessor took 87.11ms. Allocated memory is still 104.9MB. Free memory was 56.1MB in the beginning and 51.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,248 INFO L158 Benchmark]: RCFGBuilder took 1434.88ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 51.9MB in the beginning and 103.5MB in the end (delta: -51.6MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,249 INFO L158 Benchmark]: TraceAbstraction took 7617.49ms. Allocated memory was 142.6MB in the beginning and 245.4MB in the end (delta: 102.8MB). Free memory was 102.4MB in the beginning and 171.8MB in the end (delta: -69.3MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,250 INFO L158 Benchmark]: Witness Printer took 202.73ms. Allocated memory is still 245.4MB. Free memory was 170.7MB in the beginning and 156.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 02:31:42,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 76.2MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 739.91ms. Allocated memory is still 104.9MB. Free memory was 68.1MB in the beginning and 61.7MB in the end (delta: 6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.41ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 56.1MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.11ms. Allocated memory is still 104.9MB. Free memory was 56.1MB in the beginning and 51.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1434.88ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 51.9MB in the beginning and 103.5MB in the end (delta: -51.6MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7617.49ms. Allocated memory was 142.6MB in the beginning and 245.4MB in the end (delta: 102.8MB). Free memory was 102.4MB in the beginning and 171.8MB in the end (delta: -69.3MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. * Witness Printer took 202.73ms. Allocated memory is still 245.4MB. Free memory was 170.7MB in the beginning and 156.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 564]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 713 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 713 mSDsluCounter, 549 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 712 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2411 IncrementalHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 712 mSolverCounterUnsat, 506 mSDtfsCounter, 2411 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 105 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3110 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1475 NumberOfCodeBlocks, 1475 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1464 ConstructedInterpolants, 0 QuantifiedInterpolants, 3999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 1361/1503 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a16 <= 5) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || (a8 <= 13 && a16 <= 5)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || (a8 <= 13 && a16 == 6) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a16 <= 5) || ((a21 == 1 && a17 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || (a8 <= 13 && a16 <= 5)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || (a8 <= 13 && a16 == 6) RESULT: Ultimate proved your program to be correct! [2021-11-23 02:31:42,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56787c7c-d6d5-41ff-8709-7b412685d5c2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE