./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label53.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh --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 d776d2a66edd0bf084605c8ca1ce97bafb94c413e215330f3d317be481868fad --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:11:13,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:11:13,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:11:13,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:11:13,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:11:13,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:11:13,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:11:13,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:11:13,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:11:13,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:11:13,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:11:13,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:11:13,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:11:13,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:11:13,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:11:13,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:11:13,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:11:13,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:11:13,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:11:13,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:11:13,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:11:13,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:11:13,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:11:13,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:11:13,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:11:13,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:11:13,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:11:13,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:11:13,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:11:13,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:11:13,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:11:13,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:11:13,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:11:13,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:11:13,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:11:13,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:11:13,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:11:13,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:11:13,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:11:13,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:11:13,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:11:13,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:11:13,865 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:11:13,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:11:13,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:11:13,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:11:13,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:11:13,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:11:13,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:11:13,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:11:13,868 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:11:13,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:11:13,868 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:11:13,868 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:11:13,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:11:13,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:11:13,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:11:13,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:11:13,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:11:13,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:11:13,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:11:13,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:11:13,870 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:11:13,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:11:13,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:11:13,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:11:13,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:11:13,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:11:13,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:11:13,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d776d2a66edd0bf084605c8ca1ce97bafb94c413e215330f3d317be481868fad [2022-12-14 13:11:14,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:11:14,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:11:14,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:11:14,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:11:14,071 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:11:14,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem02_label53.c [2022-12-14 13:11:16,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:11:16,860 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:11:16,860 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/sv-benchmarks/c/eca-rers2012/Problem02_label53.c [2022-12-14 13:11:16,870 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/data/eddc877f1/4d7ef5b5689f4480858eaef3edf54e2b/FLAGdabd528cc [2022-12-14 13:11:17,234 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/data/eddc877f1/4d7ef5b5689f4480858eaef3edf54e2b [2022-12-14 13:11:17,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:11:17,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:11:17,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:11:17,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:11:17,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:11:17,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8c09e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17, skipping insertion in model container [2022-12-14 13:11:17,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:11:17,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:11:17,512 WARN L237 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_90671ca0-8c2d-424f-a1a5-24893b9c4665/sv-benchmarks/c/eca-rers2012/Problem02_label53.c[21108,21121] [2022-12-14 13:11:17,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:11:17,531 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:11:17,587 WARN L237 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_90671ca0-8c2d-424f-a1a5-24893b9c4665/sv-benchmarks/c/eca-rers2012/Problem02_label53.c[21108,21121] [2022-12-14 13:11:17,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:11:17,601 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:11:17,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17 WrapperNode [2022-12-14 13:11:17,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:11:17,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:11:17,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:11:17,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:11:17,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,663 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-12-14 13:11:17,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:11:17,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:11:17,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:11:17,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:11:17,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,709 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:11:17,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:11:17,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:11:17,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:11:17,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (1/1) ... [2022-12-14 13:11:17,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:11:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:11:17,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:11:17,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:11:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:11:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:11:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:11:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:11:17,857 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:11:17,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:11:18,521 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:11:18,676 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:11:18,676 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:11:18,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:11:18 BoogieIcfgContainer [2022-12-14 13:11:18,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:11:18,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:11:18,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:11:18,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:11:18,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:11:17" (1/3) ... [2022-12-14 13:11:18,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317d48af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:11:18, skipping insertion in model container [2022-12-14 13:11:18,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:17" (2/3) ... [2022-12-14 13:11:18,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317d48af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:11:18, skipping insertion in model container [2022-12-14 13:11:18,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:11:18" (3/3) ... [2022-12-14 13:11:18,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2022-12-14 13:11:18,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:11:18,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:11:18,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:11:18,762 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63436308, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:11:18,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:11:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 13:11:18,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:18,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:18,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1243334902, now seen corresponding path program 1 times [2022-12-14 13:11:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:18,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670864478] [2022-12-14 13:11:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:19,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670864478] [2022-12-14 13:11:19,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670864478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:19,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:19,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:11:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641476351] [2022-12-14 13:11:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:19,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:19,133 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 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 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) [2022-12-14 13:11:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:19,455 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-12-14 13:11:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:19,457 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 [2022-12-14 13:11:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:19,465 INFO L225 Difference]: With dead ends: 251 [2022-12-14 13:11:19,466 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 13:11:19,468 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:19,470 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:19,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:11:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 13:11:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 13:11:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2022-12-14 13:11:19,504 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2022-12-14 13:11:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:19,505 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2022-12-14 13:11:19,505 INFO L496 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) [2022-12-14 13:11:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2022-12-14 13:11:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 13:11:19,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:19,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:19,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:11:19,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1833076971, now seen corresponding path program 1 times [2022-12-14 13:11:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:19,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890489228] [2022-12-14 13:11:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:19,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890489228] [2022-12-14 13:11:19,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890489228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:19,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:19,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:11:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545158540] [2022-12-14 13:11:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:19,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:19,658 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:19,941 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2022-12-14 13:11:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:19,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-12-14 13:11:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:19,945 INFO L225 Difference]: With dead ends: 485 [2022-12-14 13:11:19,945 INFO L226 Difference]: Without dead ends: 323 [2022-12-14 13:11:19,946 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:19,947 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:19,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 63 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:11:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-12-14 13:11:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-12-14 13:11:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.515527950310559) internal successors, (488), 322 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2022-12-14 13:11:19,960 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2022-12-14 13:11:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:19,960 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2022-12-14 13:11:19,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2022-12-14 13:11:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 13:11:19,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:19,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:19,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:11:19,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:19,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:19,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2045171152, now seen corresponding path program 1 times [2022-12-14 13:11:19,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:19,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9693637] [2022-12-14 13:11:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:20,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:20,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9693637] [2022-12-14 13:11:20,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9693637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:20,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:20,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133583993] [2022-12-14 13:11:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:20,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:20,067 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:20,309 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2022-12-14 13:11:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:20,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-12-14 13:11:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:20,311 INFO L225 Difference]: With dead ends: 805 [2022-12-14 13:11:20,311 INFO L226 Difference]: Without dead ends: 483 [2022-12-14 13:11:20,313 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:20,314 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:20,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-12-14 13:11:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-12-14 13:11:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2022-12-14 13:11:20,333 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 89 [2022-12-14 13:11:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:20,333 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2022-12-14 13:11:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2022-12-14 13:11:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 13:11:20,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:20,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:20,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:11:20,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2122131973, now seen corresponding path program 1 times [2022-12-14 13:11:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:20,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542972496] [2022-12-14 13:11:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:20,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:20,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:20,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542972496] [2022-12-14 13:11:20,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542972496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:20,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:20,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212896294] [2022-12-14 13:11:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:20,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:20,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:20,471 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:20,733 INFO L93 Difference]: Finished difference Result 1205 states and 1701 transitions. [2022-12-14 13:11:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:20,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-12-14 13:11:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:20,738 INFO L225 Difference]: With dead ends: 1205 [2022-12-14 13:11:20,739 INFO L226 Difference]: Without dead ends: 723 [2022-12-14 13:11:20,740 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:20,740 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:20,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 147 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-12-14 13:11:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-12-14 13:11:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.31994459833795) internal successors, (953), 722 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 953 transitions. [2022-12-14 13:11:20,752 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 953 transitions. Word has length 89 [2022-12-14 13:11:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:20,753 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 953 transitions. [2022-12-14 13:11:20,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 953 transitions. [2022-12-14 13:11:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 13:11:20,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:20,754 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:20,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:11:20,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash 131062511, now seen corresponding path program 1 times [2022-12-14 13:11:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129852739] [2022-12-14 13:11:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:11:20,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:20,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129852739] [2022-12-14 13:11:20,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129852739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:20,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:20,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:11:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770940983] [2022-12-14 13:11:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:20,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:20,829 INFO L87 Difference]: Start difference. First operand 723 states and 953 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:21,111 INFO L93 Difference]: Finished difference Result 1765 states and 2386 transitions. [2022-12-14 13:11:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:21,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-14 13:11:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:21,116 INFO L225 Difference]: With dead ends: 1765 [2022-12-14 13:11:21,116 INFO L226 Difference]: Without dead ends: 1043 [2022-12-14 13:11:21,116 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:21,117 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 95 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:21,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 47 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:11:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-12-14 13:11:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-12-14 13:11:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.2984644913627639) internal successors, (1353), 1042 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1353 transitions. [2022-12-14 13:11:21,133 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1353 transitions. Word has length 94 [2022-12-14 13:11:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:21,133 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1353 transitions. [2022-12-14 13:11:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1353 transitions. [2022-12-14 13:11:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 13:11:21,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:21,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:11:21,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash 588900147, now seen corresponding path program 1 times [2022-12-14 13:11:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:21,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247772416] [2022-12-14 13:11:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:21,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:21,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247772416] [2022-12-14 13:11:21,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247772416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:21,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:21,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527563132] [2022-12-14 13:11:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:21,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:21,190 INFO L87 Difference]: Start difference. First operand 1043 states and 1353 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:21,443 INFO L93 Difference]: Finished difference Result 1925 states and 2530 transitions. [2022-12-14 13:11:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:21,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-12-14 13:11:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:21,445 INFO L225 Difference]: With dead ends: 1925 [2022-12-14 13:11:21,445 INFO L226 Difference]: Without dead ends: 883 [2022-12-14 13:11:21,446 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:21,447 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 70 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:21,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 165 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-12-14 13:11:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2022-12-14 13:11:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2732426303854876) internal successors, (1123), 882 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1123 transitions. [2022-12-14 13:11:21,459 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1123 transitions. Word has length 113 [2022-12-14 13:11:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:21,460 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1123 transitions. [2022-12-14 13:11:21,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1123 transitions. [2022-12-14 13:11:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 13:11:21,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:21,462 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 13:11:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 13:11:21,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1360788572, now seen corresponding path program 1 times [2022-12-14 13:11:21,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:21,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994056624] [2022-12-14 13:11:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 13:11:21,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:21,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994056624] [2022-12-14 13:11:21,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994056624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:21,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:21,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84714647] [2022-12-14 13:11:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:21,557 INFO L87 Difference]: Start difference. First operand 883 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:21,794 INFO L93 Difference]: Finished difference Result 1765 states and 2245 transitions. [2022-12-14 13:11:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:21,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-12-14 13:11:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:21,797 INFO L225 Difference]: With dead ends: 1765 [2022-12-14 13:11:21,797 INFO L226 Difference]: Without dead ends: 883 [2022-12-14 13:11:21,797 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:21,798 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:21,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 19 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-12-14 13:11:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2022-12-14 13:11:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2392290249433107) internal successors, (1093), 882 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1093 transitions. [2022-12-14 13:11:21,809 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1093 transitions. Word has length 135 [2022-12-14 13:11:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1093 transitions. [2022-12-14 13:11:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1093 transitions. [2022-12-14 13:11:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 13:11:21,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:21,811 INFO L195 NwaCegarLoop]: 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, 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] [2022-12-14 13:11:21,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 13:11:21,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash 443090990, now seen corresponding path program 1 times [2022-12-14 13:11:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:21,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762552946] [2022-12-14 13:11:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:21,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:21,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762552946] [2022-12-14 13:11:21,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762552946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:21,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:21,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:11:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55193767] [2022-12-14 13:11:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:21,898 INFO L87 Difference]: Start difference. First operand 883 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:22,190 INFO L93 Difference]: Finished difference Result 2325 states and 2921 transitions. [2022-12-14 13:11:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-12-14 13:11:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:22,195 INFO L225 Difference]: With dead ends: 2325 [2022-12-14 13:11:22,195 INFO L226 Difference]: Without dead ends: 1443 [2022-12-14 13:11:22,196 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:22,197 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:22,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 28 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:11:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2022-12-14 13:11:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2022-12-14 13:11:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.2295423023578362) internal successors, (1773), 1442 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1773 transitions. [2022-12-14 13:11:22,226 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1773 transitions. Word has length 141 [2022-12-14 13:11:22,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:22,227 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 1773 transitions. [2022-12-14 13:11:22,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1773 transitions. [2022-12-14 13:11:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 13:11:22,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:22,231 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 13:11:22,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 13:11:22,231 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash 56940266, now seen corresponding path program 1 times [2022-12-14 13:11:22,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:22,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906396917] [2022-12-14 13:11:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:22,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:11:22,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:22,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906396917] [2022-12-14 13:11:22,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906396917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:22,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:22,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:22,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883926324] [2022-12-14 13:11:22,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:22,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:22,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:22,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:22,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:22,299 INFO L87 Difference]: Start difference. First operand 1443 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2022-12-14 13:11:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:22,557 INFO L93 Difference]: Finished difference Result 3285 states and 4111 transitions. [2022-12-14 13:11:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) Word has length 146 [2022-12-14 13:11:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:22,562 INFO L225 Difference]: With dead ends: 3285 [2022-12-14 13:11:22,562 INFO L226 Difference]: Without dead ends: 1603 [2022-12-14 13:11:22,564 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:22,565 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 56 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:22,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 139 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2022-12-14 13:11:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1523. [2022-12-14 13:11:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.2247043363994743) internal successors, (1864), 1522 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1864 transitions. [2022-12-14 13:11:22,593 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1864 transitions. Word has length 146 [2022-12-14 13:11:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:22,593 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1864 transitions. [2022-12-14 13:11:22,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2022-12-14 13:11:22,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1864 transitions. [2022-12-14 13:11:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-14 13:11:22,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:22,595 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-12-14 13:11:22,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:11:22,595 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1266807502, now seen corresponding path program 1 times [2022-12-14 13:11:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:22,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324474479] [2022-12-14 13:11:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 13:11:22,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:22,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324474479] [2022-12-14 13:11:22,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324474479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:22,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:22,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:11:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489047028] [2022-12-14 13:11:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:22,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:22,709 INFO L87 Difference]: Start difference. First operand 1523 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:22,852 INFO L93 Difference]: Finished difference Result 2885 states and 3553 transitions. [2022-12-14 13:11:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 168 [2022-12-14 13:11:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:22,856 INFO L225 Difference]: With dead ends: 2885 [2022-12-14 13:11:22,856 INFO L226 Difference]: Without dead ends: 1123 [2022-12-14 13:11:22,858 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:22,859 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:22,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 4 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-12-14 13:11:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-12-14 13:11:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.179144385026738) internal successors, (1323), 1122 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1323 transitions. [2022-12-14 13:11:22,885 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1323 transitions. Word has length 168 [2022-12-14 13:11:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:22,885 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1323 transitions. [2022-12-14 13:11:22,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1323 transitions. [2022-12-14 13:11:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-14 13:11:22,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:22,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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] [2022-12-14 13:11:22,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 13:11:22,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1447469013, now seen corresponding path program 1 times [2022-12-14 13:11:22,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:22,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103164448] [2022-12-14 13:11:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:22,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:23,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103164448] [2022-12-14 13:11:23,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103164448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:11:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595254273] [2022-12-14 13:11:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:23,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:11:23,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:11:23,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:11:23,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:11:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:23,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:11:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:11:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 13:11:23,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:11:23,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595254273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:23,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:11:23,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:11:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2539608] [2022-12-14 13:11:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:23,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:23,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:11:23,419 INFO L87 Difference]: Start difference. First operand 1123 states and 1323 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:23,599 INFO L93 Difference]: Finished difference Result 1125 states and 1324 transitions. [2022-12-14 13:11:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 178 [2022-12-14 13:11:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:23,602 INFO L225 Difference]: With dead ends: 1125 [2022-12-14 13:11:23,602 INFO L226 Difference]: Without dead ends: 1043 [2022-12-14 13:11:23,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:11:23,603 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:23,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 126 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-12-14 13:11:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-12-14 13:11:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.182341650671785) internal successors, (1232), 1042 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1232 transitions. [2022-12-14 13:11:23,616 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1232 transitions. Word has length 178 [2022-12-14 13:11:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:23,616 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1232 transitions. [2022-12-14 13:11:23,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1232 transitions. [2022-12-14 13:11:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-12-14 13:11:23,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:23,618 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-12-14 13:11:23,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:11:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 13:11:23,819 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash -327416343, now seen corresponding path program 1 times [2022-12-14 13:11:23,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:23,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242128003] [2022-12-14 13:11:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 13:11:23,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:23,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242128003] [2022-12-14 13:11:23,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242128003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:23,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:23,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821305054] [2022-12-14 13:11:23,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:23,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:23,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:23,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:23,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:23,923 INFO L87 Difference]: Start difference. First operand 1043 states and 1232 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:24,125 INFO L93 Difference]: Finished difference Result 2405 states and 2886 transitions. [2022-12-14 13:11:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 190 [2022-12-14 13:11:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:24,128 INFO L225 Difference]: With dead ends: 2405 [2022-12-14 13:11:24,128 INFO L226 Difference]: Without dead ends: 963 [2022-12-14 13:11:24,129 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:24,129 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 63 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:24,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 99 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-12-14 13:11:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-12-14 13:11:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.0977130977130978) internal successors, (1056), 962 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1056 transitions. [2022-12-14 13:11:24,144 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1056 transitions. Word has length 190 [2022-12-14 13:11:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:24,144 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1056 transitions. [2022-12-14 13:11:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1056 transitions. [2022-12-14 13:11:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-12-14 13:11:24,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:24,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 13:11:24,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 13:11:24,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -595181200, now seen corresponding path program 1 times [2022-12-14 13:11:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:24,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539767032] [2022-12-14 13:11:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:24,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539767032] [2022-12-14 13:11:24,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539767032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:24,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:24,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:11:24,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401608172] [2022-12-14 13:11:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:24,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:11:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:11:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:11:24,319 INFO L87 Difference]: Start difference. First operand 963 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:24,467 INFO L93 Difference]: Finished difference Result 1845 states and 2029 transitions. [2022-12-14 13:11:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2022-12-14 13:11:24,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:24,469 INFO L225 Difference]: With dead ends: 1845 [2022-12-14 13:11:24,469 INFO L226 Difference]: Without dead ends: 963 [2022-12-14 13:11:24,470 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:24,470 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 79 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:24,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 105 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-12-14 13:11:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-12-14 13:11:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.0914760914760915) internal successors, (1050), 962 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1050 transitions. [2022-12-14 13:11:24,481 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1050 transitions. Word has length 213 [2022-12-14 13:11:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:24,482 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1050 transitions. [2022-12-14 13:11:24,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1050 transitions. [2022-12-14 13:11:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-14 13:11:24,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:24,484 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-12-14 13:11:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 13:11:24,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 775719335, now seen corresponding path program 1 times [2022-12-14 13:11:24,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:24,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418670575] [2022-12-14 13:11:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:24,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 167 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 13:11:24,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:24,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418670575] [2022-12-14 13:11:24,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418670575] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:11:24,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180394585] [2022-12-14 13:11:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:24,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:11:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:11:24,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:11:24,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:11:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:24,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:11:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:11:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-12-14 13:11:25,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:11:25,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180394585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:25,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:11:25,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 13:11:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320316814] [2022-12-14 13:11:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:25,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:11:25,052 INFO L87 Difference]: Start difference. First operand 963 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:25,221 INFO L93 Difference]: Finished difference Result 2165 states and 2371 transitions. [2022-12-14 13:11:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:25,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 248 [2022-12-14 13:11:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:25,226 INFO L225 Difference]: With dead ends: 2165 [2022-12-14 13:11:25,227 INFO L226 Difference]: Without dead ends: 1123 [2022-12-14 13:11:25,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:11:25,228 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:25,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:11:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-12-14 13:11:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-12-14 13:11:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.067736185383244) internal successors, (1198), 1122 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1198 transitions. [2022-12-14 13:11:25,260 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1198 transitions. Word has length 248 [2022-12-14 13:11:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:25,260 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1198 transitions. [2022-12-14 13:11:25,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1198 transitions. [2022-12-14 13:11:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-12-14 13:11:25,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:11:25,269 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-12-14 13:11:25,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 13:11:25,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 13:11:25,470 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:11:25,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:11:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1609055789, now seen corresponding path program 1 times [2022-12-14 13:11:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:11:25,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287111456] [2022-12-14 13:11:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:11:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:11:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:11:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-12-14 13:11:25,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:11:25,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287111456] [2022-12-14 13:11:25,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287111456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:11:25,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:11:25,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:11:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802084397] [2022-12-14 13:11:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:11:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:11:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:11:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:11:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:11:25,698 INFO L87 Difference]: Start difference. First operand 1123 states and 1198 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:11:25,838 INFO L93 Difference]: Finished difference Result 2003 states and 2144 transitions. [2022-12-14 13:11:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:11:25,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 363 [2022-12-14 13:11:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:11:25,839 INFO L225 Difference]: With dead ends: 2003 [2022-12-14 13:11:25,839 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:11:25,841 INFO L412 NwaCegarLoop]: 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 [2022-12-14 13:11:25,841 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 32 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:11:25,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 94 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:11:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:11:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:11:25,842 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) [2022-12-14 13:11:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:11:25,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2022-12-14 13:11:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:11:25,843 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:11:25,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:11:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:11:25,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:11:25,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:11:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 13:11:25,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:11:26,371 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-12-14 13:11:26,371 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-12-14 13:11:26,371 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-12-14 13:11:26,371 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-12-14 13:11:26,372 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-12-14 13:11:26,373 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-12-14 13:11:26,374 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-12-14 13:11:26,374 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-12-14 13:11:26,374 INFO L899 garLoopResultBuilder]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 13:11:26,380 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 596) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L595-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L596(line 596) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-12-14 13:11:26,381 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-12-14 13:11:26,382 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-12-14 13:11:26,382 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= 9 ~a28~0)) (.cse3 (= ~a25~0 0)) (.cse8 (<= ~a28~0 10)) (.cse0 (= ~a11~0 1)) (.cse4 (= 7 ~a28~0)) (.cse7 (= ~a25~0 1)) (.cse5 (= ~a11~0 0)) (.cse1 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse3) (and .cse6 .cse7 .cse5 .cse1 .cse8) (and .cse6 .cse1 .cse8 .cse3) (and (not .cse2) .cse1 .cse8 .cse3) (and .cse6 .cse7 .cse1 .cse2) (and (<= 10 ~a28~0) .cse0 .cse8 .cse3) (and (<= 11 ~a28~0) .cse0 .cse2 .cse3) (and .cse7 .cse0 (<= ~a17~0 7) .cse8) (and .cse7 .cse0 .cse1 .cse2) (and .cse4 .cse7 .cse1) (and .cse7 .cse5 .cse1 .cse2))) [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-12-14 13:11:26,383 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-12-14 13:11:26,384 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-12-14 13:11:26,385 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= 9 ~a28~0)) (.cse3 (= ~a25~0 0)) (.cse8 (<= ~a28~0 10)) (.cse0 (= ~a11~0 1)) (.cse4 (= 7 ~a28~0)) (.cse7 (= ~a25~0 1)) (.cse5 (= ~a11~0 0)) (.cse1 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse3) (and .cse6 .cse7 .cse5 .cse1 .cse8) (and .cse6 .cse1 .cse8 .cse3) (and (not .cse2) .cse1 .cse8 .cse3) (and .cse6 .cse7 .cse1 .cse2) (and (<= 10 ~a28~0) .cse0 .cse8 .cse3) (and (<= 11 ~a28~0) .cse0 .cse2 .cse3) (and .cse7 .cse0 (<= ~a17~0 7) .cse8) (and .cse7 .cse0 .cse1 .cse2) (and .cse4 .cse7 .cse1) (and .cse7 .cse5 .cse1 .cse2))) [2022-12-14 13:11:26,385 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-12-14 13:11:26,385 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-12-14 13:11:26,385 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-12-14 13:11:26,387 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:11:26,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:11:26,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:11:26 BoogieIcfgContainer [2022-12-14 13:11:26,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:11:26,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:11:26,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:11:26,402 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:11:26,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:11:18" (3/4) ... [2022-12-14 13:11:26,404 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:11:26,416 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-12-14 13:11:26,417 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-14 13:11:26,418 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 13:11:26,418 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 13:11:26,475 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:11:26,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:11:26,475 INFO L158 Benchmark]: Toolchain (without parser) took 9234.24ms. Allocated memory was 146.8MB in the beginning and 331.4MB in the end (delta: 184.5MB). Free memory was 98.9MB in the beginning and 280.0MB in the end (delta: -181.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,475 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory was 101.7MB in the beginning and 101.5MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:11:26,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.93ms. Allocated memory is still 146.8MB. Free memory was 98.9MB in the beginning and 72.7MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.80ms. Allocated memory is still 146.8MB. Free memory was 72.7MB in the beginning and 67.2MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,476 INFO L158 Benchmark]: Boogie Preprocessor took 55.01ms. Allocated memory is still 146.8MB. Free memory was 67.2MB in the beginning and 63.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,476 INFO L158 Benchmark]: RCFGBuilder took 947.48ms. Allocated memory was 146.8MB in the beginning and 228.6MB in the end (delta: 81.8MB). Free memory was 116.6MB in the beginning and 191.2MB in the end (delta: -74.6MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,476 INFO L158 Benchmark]: TraceAbstraction took 7718.99ms. Allocated memory was 228.6MB in the beginning and 331.4MB in the end (delta: 102.8MB). Free memory was 190.1MB in the beginning and 290.5MB in the end (delta: -100.4MB). Peak memory consumption was 185.7MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,476 INFO L158 Benchmark]: Witness Printer took 73.17ms. Allocated memory is still 331.4MB. Free memory was 290.5MB in the beginning and 280.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:11:26,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory was 101.7MB in the beginning and 101.5MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.93ms. Allocated memory is still 146.8MB. Free memory was 98.9MB in the beginning and 72.7MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.80ms. Allocated memory is still 146.8MB. Free memory was 72.7MB in the beginning and 67.2MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.01ms. Allocated memory is still 146.8MB. Free memory was 67.2MB in the beginning and 63.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 947.48ms. Allocated memory was 146.8MB in the beginning and 228.6MB in the end (delta: 81.8MB). Free memory was 116.6MB in the beginning and 191.2MB in the end (delta: -74.6MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7718.99ms. Allocated memory was 228.6MB in the beginning and 331.4MB in the end (delta: 102.8MB). Free memory was 190.1MB in the beginning and 290.5MB in the end (delta: -100.4MB). Peak memory consumption was 185.7MB. Max. memory is 16.1GB. * Witness Printer took 73.17ms. Allocated memory is still 331.4MB. Free memory was 290.5MB in the beginning and 280.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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: 596]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 15, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 818 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 818 mSDsluCounter, 1254 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 665 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3288 IncrementalHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 665 mSolverCounterUnsat, 1173 mSDtfsCounter, 3288 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 468 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1523occurred in iteration=9, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 80 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 59 NumberOfFragments, 317 HoareAnnotationTreeSize, 3 FomulaSimplifications, 124 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 576 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 2757 NumberOfCodeBlocks, 2757 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2740 ConstructedInterpolants, 0 QuantifiedInterpolants, 8201 SizeOfPredicates, 3 NumberOfNonLiveVariables, 825 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 2514/2666 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: 39]: Loop Invariant Derived loop invariant: (((((((((((((a11 == 1 && a17 <= 8) && a19 == 1) && a25 == 0) || (((7 == a28 && a11 == 0) && a17 <= 8) && a25 == 0)) || ((((9 <= a28 && a25 == 1) && a11 == 0) && a17 <= 8) && a28 <= 10)) || (((9 <= a28 && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((!(a19 == 1) && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((9 <= a28 && a25 == 1) && a17 <= 8) && a19 == 1)) || (((10 <= a28 && a11 == 1) && a28 <= 10) && a25 == 0)) || (((11 <= a28 && a11 == 1) && a19 == 1) && a25 == 0)) || (((a25 == 1 && a11 == 1) && a17 <= 7) && a28 <= 10)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a19 == 1)) || ((7 == a28 && a25 == 1) && a17 <= 8)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((((a11 == 1 && a17 <= 8) && a19 == 1) && a25 == 0) || (((7 == a28 && a11 == 0) && a17 <= 8) && a25 == 0)) || ((((9 <= a28 && a25 == 1) && a11 == 0) && a17 <= 8) && a28 <= 10)) || (((9 <= a28 && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((!(a19 == 1) && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((9 <= a28 && a25 == 1) && a17 <= 8) && a19 == 1)) || (((10 <= a28 && a11 == 1) && a28 <= 10) && a25 == 0)) || (((11 <= a28 && a11 == 1) && a19 == 1) && a25 == 0)) || (((a25 == 1 && a11 == 1) && a17 <= 7) && a28 <= 10)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a19 == 1)) || ((7 == a28 && a25 == 1) && a17 <= 8)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 13:11:26,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90671ca0-8c2d-424f-a1a5-24893b9c4665/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE