./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:54:20,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:54:20,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:54:20,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:54:20,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:54:20,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:54:20,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:54:20,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:54:20,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:54:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:54:20,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:54:20,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:54:20,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:54:20,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:54:20,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:54:20,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:54:20,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:54:20,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:54:20,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:54:20,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:54:20,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:54:20,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:54:20,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:54:20,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:54:20,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:54:20,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:54:20,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:54:20,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:54:20,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:54:20,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:54:20,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:54:20,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:54:20,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:54:20,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:54:20,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:54:20,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:54:20,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:54:20,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:54:20,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:54:20,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:54:20,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:54:20,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:54:20,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:54:20,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:54:20,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:54:20,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:54:20,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:54:20,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:54:20,948 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:54:20,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:54:20,948 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:54:20,948 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:54:20,949 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:54:20,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:54:20,949 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:54:20,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:54:20,949 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:54:20,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:54:20,950 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:54:20,950 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:54:20,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:54:20,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:54:20,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:54:20,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:54:20,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:54:20,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:54:20,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:54:20,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:54:20,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:54:20,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:54:20,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:54:20,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:54:20,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:54:20,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:54:20,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:54:20,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:54:20,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:54:20,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:54:20,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:54:20,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:54:20,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:54:20,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:54:20,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:54:20,955 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2021-11-21 00:54:21,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:54:21,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:54:21,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:54:21,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:54:21,271 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:54:21,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2021-11-21 00:54:21,346 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/data/0aba868fe/c4e34a9071d349cb9d42f4769b5c6c3a/FLAGc6a0ea1e1 [2021-11-21 00:54:21,902 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:54:21,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2021-11-21 00:54:21,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/data/0aba868fe/c4e34a9071d349cb9d42f4769b5c6c3a/FLAGc6a0ea1e1 [2021-11-21 00:54:22,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/data/0aba868fe/c4e34a9071d349cb9d42f4769b5c6c3a [2021-11-21 00:54:22,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:54:22,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:54:22,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:54:22,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:54:22,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:54:22,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6a7138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22, skipping insertion in model container [2021-11-21 00:54:22,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:54:22,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:54:22,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2021-11-21 00:54:22,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:54:22,569 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:54:22,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2021-11-21 00:54:22,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:54:22,622 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:54:22,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22 WrapperNode [2021-11-21 00:54:22,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:54:22,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:54:22,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:54:22,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:54:22,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,696 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2021-11-21 00:54:22,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:54:22,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:54:22,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:54:22,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:54:22,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:54:22,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:54:22,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:54:22,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:54:22,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (1/1) ... [2021-11-21 00:54:22,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:54:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:54:22,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:54:22,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:54:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:54:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:54:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:54:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:54:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-21 00:54:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-21 00:54:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-21 00:54:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-21 00:54:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-21 00:54:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-21 00:54:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:54:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:54:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:54:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:54:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:54:22,869 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-21 00:54:23,041 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:54:23,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:54:23,772 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:54:23,790 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:54:23,790 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-21 00:54:23,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:54:23 BoogieIcfgContainer [2021-11-21 00:54:23,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:54:23,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:54:23,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:54:23,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:54:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:54:22" (1/3) ... [2021-11-21 00:54:23,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a30d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:54:23, skipping insertion in model container [2021-11-21 00:54:23,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:54:22" (2/3) ... [2021-11-21 00:54:23,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a30d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:54:23, skipping insertion in model container [2021-11-21 00:54:23,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:54:23" (3/3) ... [2021-11-21 00:54:23,802 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2021-11-21 00:54:23,806 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 00:54:23,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:54:23,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:54:23,806 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 00:54:23,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,927 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,928 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,929 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,930 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,931 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,933 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,934 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,934 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,934 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,934 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,934 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,934 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,935 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,936 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,937 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,938 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,939 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,940 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,940 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,940 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,940 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,940 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,940 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,941 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,941 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,941 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,941 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,941 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,941 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,942 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,942 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,942 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,942 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,942 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,942 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,943 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,944 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,945 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,946 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,947 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,948 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,949 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,950 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,951 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,952 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,957 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,958 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,958 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,958 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,958 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,958 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,958 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,964 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,965 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,965 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,965 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,965 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,965 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,965 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,966 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,970 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,970 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,970 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,970 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,970 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,970 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,987 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,988 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,989 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,990 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,991 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,993 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,994 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:23,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,001 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,002 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,002 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,002 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,002 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,009 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,010 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,011 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,012 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:54:24,014 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-21 00:54:24,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:54:24,067 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:54:24,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 00:54:24,117 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 00:54:24,131 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 574 transitions, 1172 flow [2021-11-21 00:54:24,138 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 574 transitions, 1172 flow [2021-11-21 00:54:24,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 537 places, 574 transitions, 1172 flow [2021-11-21 00:54:24,466 INFO L129 PetriNetUnfolder]: 47/571 cut-off events. [2021-11-21 00:54:24,466 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-21 00:54:24,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 571 events. 47/571 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 849 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2021-11-21 00:54:24,517 INFO L116 LiptonReduction]: Number of co-enabled transitions 29184 [2021-11-21 00:54:46,424 INFO L131 LiptonReduction]: Checked pairs total: 32641 [2021-11-21 00:54:46,425 INFO L133 LiptonReduction]: Total number of compositions: 691 [2021-11-21 00:54:46,433 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 116 flow [2021-11-21 00:54:46,471 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 00:54:46,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:46,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:46,494 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 883599033, now seen corresponding path program 1 times [2021-11-21 00:54:46,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:46,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318691228] [2021-11-21 00:54:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:46,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:46,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318691228] [2021-11-21 00:54:46,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318691228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:46,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:46,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:46,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571093863] [2021-11-21 00:54:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:46,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:46,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:46,930 INFO L87 Difference]: Start difference. First operand has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 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 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:47,095 INFO L93 Difference]: Finished difference Result 396 states and 1234 transitions. [2021-11-21 00:54:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:47,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-21 00:54:47,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:47,114 INFO L225 Difference]: With dead ends: 396 [2021-11-21 00:54:47,115 INFO L226 Difference]: Without dead ends: 396 [2021-11-21 00:54:47,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:47,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:47,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-21 00:54:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2021-11-21 00:54:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.1240506329113926) internal successors, (1234), 395 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1234 transitions. [2021-11-21 00:54:47,191 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1234 transitions. Word has length 28 [2021-11-21 00:54:47,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:47,192 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 1234 transitions. [2021-11-21 00:54:47,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1234 transitions. [2021-11-21 00:54:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 00:54:47,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:47,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:47,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:54:47,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1978716436, now seen corresponding path program 1 times [2021-11-21 00:54:47,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:47,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499002800] [2021-11-21 00:54:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:47,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:47,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499002800] [2021-11-21 00:54:47,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499002800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:47,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:47,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:47,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831006826] [2021-11-21 00:54:47,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:47,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:47,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:47,369 INFO L87 Difference]: Start difference. First operand 396 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:47,474 INFO L93 Difference]: Finished difference Result 446 states and 1388 transitions. [2021-11-21 00:54:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-21 00:54:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:47,482 INFO L225 Difference]: With dead ends: 446 [2021-11-21 00:54:47,483 INFO L226 Difference]: Without dead ends: 446 [2021-11-21 00:54:47,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:47,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:47,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-21 00:54:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-21 00:54:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.1191011235955055) internal successors, (1388), 445 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1388 transitions. [2021-11-21 00:54:47,530 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1388 transitions. Word has length 29 [2021-11-21 00:54:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:47,531 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1388 transitions. [2021-11-21 00:54:47,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1388 transitions. [2021-11-21 00:54:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:54:47,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:47,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:47,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:54:47,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:47,541 INFO L85 PathProgramCache]: Analyzing trace with hash -370491902, now seen corresponding path program 1 times [2021-11-21 00:54:47,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:47,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937537137] [2021-11-21 00:54:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:47,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:54:47,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:47,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937537137] [2021-11-21 00:54:47,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937537137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:47,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:47,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:54:47,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078145708] [2021-11-21 00:54:47,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:47,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:54:47,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:54:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:47,709 INFO L87 Difference]: Start difference. First operand 446 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:47,796 INFO L93 Difference]: Finished difference Result 447 states and 1389 transitions. [2021-11-21 00:54:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:54:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-21 00:54:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:47,801 INFO L225 Difference]: With dead ends: 447 [2021-11-21 00:54:47,801 INFO L226 Difference]: Without dead ends: 447 [2021-11-21 00:54:47,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:54:47,803 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:47,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-21 00:54:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-21 00:54:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.1143497757847536) internal successors, (1389), 446 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1389 transitions. [2021-11-21 00:54:47,822 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1389 transitions. Word has length 30 [2021-11-21 00:54:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:47,822 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1389 transitions. [2021-11-21 00:54:47,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1389 transitions. [2021-11-21 00:54:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 00:54:47,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:47,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:47,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:54:47,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash -581274643, now seen corresponding path program 1 times [2021-11-21 00:54:47,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:47,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953780850] [2021-11-21 00:54:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:47,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:54:47,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:47,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953780850] [2021-11-21 00:54:47,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953780850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:47,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:47,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:47,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552519391] [2021-11-21 00:54:47,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:47,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:54:47,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:47,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:54:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:47,896 INFO L87 Difference]: Start difference. First operand 447 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:47,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:47,986 INFO L93 Difference]: Finished difference Result 448 states and 1390 transitions. [2021-11-21 00:54:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:54:47,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-21 00:54:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:47,991 INFO L225 Difference]: With dead ends: 448 [2021-11-21 00:54:47,991 INFO L226 Difference]: Without dead ends: 448 [2021-11-21 00:54:47,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:54:47,992 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:47,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-21 00:54:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-11-21 00:54:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.1096196868008947) internal successors, (1390), 447 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1390 transitions. [2021-11-21 00:54:48,011 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1390 transitions. Word has length 31 [2021-11-21 00:54:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:48,011 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1390 transitions. [2021-11-21 00:54:48,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1390 transitions. [2021-11-21 00:54:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 00:54:48,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:48,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:48,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:54:48,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:48,014 INFO L85 PathProgramCache]: Analyzing trace with hash -733896230, now seen corresponding path program 1 times [2021-11-21 00:54:48,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:48,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984479273] [2021-11-21 00:54:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:48,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:54:48,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:48,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984479273] [2021-11-21 00:54:48,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984479273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:48,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:48,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:48,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220412216] [2021-11-21 00:54:48,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:48,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:54:48,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:48,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:54:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:48,107 INFO L87 Difference]: Start difference. First operand 448 states and 1390 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:48,198 INFO L93 Difference]: Finished difference Result 449 states and 1391 transitions. [2021-11-21 00:54:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:54:48,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-21 00:54:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:48,202 INFO L225 Difference]: With dead ends: 449 [2021-11-21 00:54:48,202 INFO L226 Difference]: Without dead ends: 449 [2021-11-21 00:54:48,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:54:48,204 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:48,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-21 00:54:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-21 00:54:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.1049107142857144) internal successors, (1391), 448 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1391 transitions. [2021-11-21 00:54:48,226 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1391 transitions. Word has length 32 [2021-11-21 00:54:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:48,227 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 1391 transitions. [2021-11-21 00:54:48,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1391 transitions. [2021-11-21 00:54:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:54:48,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:48,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:48,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:54:48,230 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:48,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:48,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1101643312, now seen corresponding path program 1 times [2021-11-21 00:54:48,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:48,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155201148] [2021-11-21 00:54:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:48,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:54:48,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:48,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155201148] [2021-11-21 00:54:48,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155201148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:48,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:48,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:48,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314227150] [2021-11-21 00:54:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:48,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:54:48,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:54:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:48,303 INFO L87 Difference]: Start difference. First operand 449 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:48,401 INFO L93 Difference]: Finished difference Result 450 states and 1392 transitions. [2021-11-21 00:54:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:54:48,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-21 00:54:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:48,405 INFO L225 Difference]: With dead ends: 450 [2021-11-21 00:54:48,405 INFO L226 Difference]: Without dead ends: 450 [2021-11-21 00:54:48,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:54:48,407 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:48,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-21 00:54:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-21 00:54:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.1002227171492205) internal successors, (1392), 449 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1392 transitions. [2021-11-21 00:54:48,425 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1392 transitions. Word has length 33 [2021-11-21 00:54:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:48,425 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1392 transitions. [2021-11-21 00:54:48,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1392 transitions. [2021-11-21 00:54:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:54:48,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:48,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:48,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:54:48,428 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 310986220, now seen corresponding path program 1 times [2021-11-21 00:54:48,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:48,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738993968] [2021-11-21 00:54:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:48,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:54:48,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:48,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738993968] [2021-11-21 00:54:48,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738993968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:48,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:48,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:48,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040043266] [2021-11-21 00:54:48,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:48,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:54:48,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:54:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:48,498 INFO L87 Difference]: Start difference. First operand 450 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:48,593 INFO L93 Difference]: Finished difference Result 451 states and 1393 transitions. [2021-11-21 00:54:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:54:48,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-21 00:54:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:48,598 INFO L225 Difference]: With dead ends: 451 [2021-11-21 00:54:48,598 INFO L226 Difference]: Without dead ends: 451 [2021-11-21 00:54:48,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:54:48,599 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:48,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-21 00:54:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-21 00:54:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 3.0955555555555554) internal successors, (1393), 450 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1393 transitions. [2021-11-21 00:54:48,617 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1393 transitions. Word has length 34 [2021-11-21 00:54:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:48,617 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 1393 transitions. [2021-11-21 00:54:48,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1393 transitions. [2021-11-21 00:54:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 00:54:48,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:48,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:48,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:54:48,620 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1897616594, now seen corresponding path program 1 times [2021-11-21 00:54:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:48,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103054195] [2021-11-21 00:54:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:48,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:54:48,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:48,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103054195] [2021-11-21 00:54:48,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103054195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:48,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:48,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:54:48,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730715047] [2021-11-21 00:54:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:48,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:54:48,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:54:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:48,718 INFO L87 Difference]: Start difference. First operand 451 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:48,810 INFO L93 Difference]: Finished difference Result 452 states and 1394 transitions. [2021-11-21 00:54:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:54:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-21 00:54:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:48,815 INFO L225 Difference]: With dead ends: 452 [2021-11-21 00:54:48,815 INFO L226 Difference]: Without dead ends: 452 [2021-11-21 00:54:48,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:54:48,816 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:48,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:54:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-21 00:54:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-11-21 00:54:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.090909090909091) internal successors, (1394), 451 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1394 transitions. [2021-11-21 00:54:48,834 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1394 transitions. Word has length 35 [2021-11-21 00:54:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:48,835 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1394 transitions. [2021-11-21 00:54:48,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1394 transitions. [2021-11-21 00:54:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:54:48,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:48,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:48,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:54:48,858 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash -694410322, now seen corresponding path program 1 times [2021-11-21 00:54:48,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81061929] [2021-11-21 00:54:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:48,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:54:50,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:50,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81061929] [2021-11-21 00:54:50,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81061929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:50,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:50,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:54:50,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884950426] [2021-11-21 00:54:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:50,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:54:50,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:54:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:54:50,323 INFO L87 Difference]: Start difference. First operand 452 states and 1394 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:53,228 INFO L93 Difference]: Finished difference Result 1281 states and 3732 transitions. [2021-11-21 00:54:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:54:53,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:54:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:53,240 INFO L225 Difference]: With dead ends: 1281 [2021-11-21 00:54:53,241 INFO L226 Difference]: Without dead ends: 1274 [2021-11-21 00:54:53,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:54:53,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:53,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:54:53,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-21 00:54:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 470. [2021-11-21 00:54:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.074626865671642) internal successors, (1442), 469 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1442 transitions. [2021-11-21 00:54:53,271 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1442 transitions. Word has length 36 [2021-11-21 00:54:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:53,273 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1442 transitions. [2021-11-21 00:54:53,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1442 transitions. [2021-11-21 00:54:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:54:53,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:53,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:53,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:54:53,279 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1198470186, now seen corresponding path program 1 times [2021-11-21 00:54:53,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:53,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781452828] [2021-11-21 00:54:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:53,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:54:53,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:53,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781452828] [2021-11-21 00:54:53,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781452828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:53,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:53,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:54:53,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635233656] [2021-11-21 00:54:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:53,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:54:53,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:54:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:53,472 INFO L87 Difference]: Start difference. First operand 470 states and 1442 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:53,643 INFO L93 Difference]: Finished difference Result 756 states and 2282 transitions. [2021-11-21 00:54:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:54:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:54:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:53,650 INFO L225 Difference]: With dead ends: 756 [2021-11-21 00:54:53,650 INFO L226 Difference]: Without dead ends: 756 [2021-11-21 00:54:53,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:54:53,652 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:53,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:54:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-21 00:54:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 536. [2021-11-21 00:54:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 3.0635514018691588) internal successors, (1639), 535 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1639 transitions. [2021-11-21 00:54:53,680 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1639 transitions. Word has length 36 [2021-11-21 00:54:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:53,681 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 1639 transitions. [2021-11-21 00:54:53,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1639 transitions. [2021-11-21 00:54:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:54:53,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:53,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:53,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:54:53,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1425177980, now seen corresponding path program 2 times [2021-11-21 00:54:53,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:53,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409765442] [2021-11-21 00:54:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:53,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:54:54,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:54,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409765442] [2021-11-21 00:54:54,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409765442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:54,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:54,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:54:54,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433603752] [2021-11-21 00:54:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:54,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:54:54,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:54:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:54:54,562 INFO L87 Difference]: Start difference. First operand 536 states and 1639 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:54:58,080 INFO L93 Difference]: Finished difference Result 1677 states and 4882 transitions. [2021-11-21 00:54:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-21 00:54:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:54:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:54:58,096 INFO L225 Difference]: With dead ends: 1677 [2021-11-21 00:54:58,096 INFO L226 Difference]: Without dead ends: 1670 [2021-11-21 00:54:58,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 00:54:58,097 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 389 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:54:58,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 0 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:54:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-11-21 00:54:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 542. [2021-11-21 00:54:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.0720887245841033) internal successors, (1662), 541 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1662 transitions. [2021-11-21 00:54:58,133 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1662 transitions. Word has length 36 [2021-11-21 00:54:58,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:54:58,133 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1662 transitions. [2021-11-21 00:54:58,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:54:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1662 transitions. [2021-11-21 00:54:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:54:58,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:54:58,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:54:58,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:54:58,137 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:54:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:54:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1940746558, now seen corresponding path program 3 times [2021-11-21 00:54:58,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:54:58,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725780887] [2021-11-21 00:54:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:54:58,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:54:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:54:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:54:59,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:54:59,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725780887] [2021-11-21 00:54:59,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725780887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:54:59,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:54:59,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:54:59,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40317553] [2021-11-21 00:54:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:54:59,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:54:59,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:54:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:54:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:54:59,055 INFO L87 Difference]: Start difference. First operand 542 states and 1662 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:04,378 INFO L93 Difference]: Finished difference Result 1777 states and 5201 transitions. [2021-11-21 00:55:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 00:55:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:04,394 INFO L225 Difference]: With dead ends: 1777 [2021-11-21 00:55:04,394 INFO L226 Difference]: Without dead ends: 1770 [2021-11-21 00:55:04,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=448, Invalid=1274, Unknown=0, NotChecked=0, Total=1722 [2021-11-21 00:55:04,396 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 370 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:04,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 0 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:55:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-11-21 00:55:04,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 542. [2021-11-21 00:55:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.0720887245841033) internal successors, (1662), 541 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1662 transitions. [2021-11-21 00:55:04,434 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1662 transitions. Word has length 36 [2021-11-21 00:55:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:04,434 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1662 transitions. [2021-11-21 00:55:04,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1662 transitions. [2021-11-21 00:55:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:04,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:04,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:04,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:55:04,438 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash 951203754, now seen corresponding path program 4 times [2021-11-21 00:55:04,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:04,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40870373] [2021-11-21 00:55:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:04,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:05,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:05,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40870373] [2021-11-21 00:55:05,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40870373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:05,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:05,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:05,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139246901] [2021-11-21 00:55:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:05,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:05,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:05,279 INFO L87 Difference]: Start difference. First operand 542 states and 1662 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:09,576 INFO L93 Difference]: Finished difference Result 1459 states and 4223 transitions. [2021-11-21 00:55:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:55:09,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:09,595 INFO L225 Difference]: With dead ends: 1459 [2021-11-21 00:55:09,595 INFO L226 Difference]: Without dead ends: 1452 [2021-11-21 00:55:09,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:55:09,596 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:09,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:55:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-11-21 00:55:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 542. [2021-11-21 00:55:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.0720887245841033) internal successors, (1662), 541 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1662 transitions. [2021-11-21 00:55:09,628 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1662 transitions. Word has length 36 [2021-11-21 00:55:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:09,629 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1662 transitions. [2021-11-21 00:55:09,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1662 transitions. [2021-11-21 00:55:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:09,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:09,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:09,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:55:09,632 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2061836480, now seen corresponding path program 5 times [2021-11-21 00:55:09,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:09,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003669238] [2021-11-21 00:55:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:09,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:10,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:10,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003669238] [2021-11-21 00:55:10,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003669238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:10,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:10,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:55:10,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759299047] [2021-11-21 00:55:10,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:10,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:55:10,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:55:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:55:10,387 INFO L87 Difference]: Start difference. First operand 542 states and 1662 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:11,314 INFO L93 Difference]: Finished difference Result 1269 states and 3732 transitions. [2021-11-21 00:55:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:55:11,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:11,331 INFO L225 Difference]: With dead ends: 1269 [2021-11-21 00:55:11,331 INFO L226 Difference]: Without dead ends: 1262 [2021-11-21 00:55:11,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:55:11,333 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:11,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:55:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-11-21 00:55:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 568. [2021-11-21 00:55:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.0811287477954146) internal successors, (1747), 567 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1747 transitions. [2021-11-21 00:55:11,366 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1747 transitions. Word has length 36 [2021-11-21 00:55:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:11,368 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1747 transitions. [2021-11-21 00:55:11,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1747 transitions. [2021-11-21 00:55:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:11,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:11,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:11,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:55:11,371 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash -716672896, now seen corresponding path program 6 times [2021-11-21 00:55:11,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:11,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434906432] [2021-11-21 00:55:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:11,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:12,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:12,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434906432] [2021-11-21 00:55:12,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434906432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:12,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:12,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:12,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435000020] [2021-11-21 00:55:12,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:12,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:12,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:12,355 INFO L87 Difference]: Start difference. First operand 568 states and 1747 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:17,779 INFO L93 Difference]: Finished difference Result 1907 states and 5591 transitions. [2021-11-21 00:55:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-21 00:55:17,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:17,791 INFO L225 Difference]: With dead ends: 1907 [2021-11-21 00:55:17,791 INFO L226 Difference]: Without dead ends: 1900 [2021-11-21 00:55:17,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=627, Invalid=1923, Unknown=0, NotChecked=0, Total=2550 [2021-11-21 00:55:17,793 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 370 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:17,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 0 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:55:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-11-21 00:55:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 568. [2021-11-21 00:55:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.0811287477954146) internal successors, (1747), 567 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1747 transitions. [2021-11-21 00:55:17,829 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1747 transitions. Word has length 36 [2021-11-21 00:55:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:17,829 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1747 transitions. [2021-11-21 00:55:17,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1747 transitions. [2021-11-21 00:55:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:17,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:17,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:17,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:55:17,833 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:17,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1440000968, now seen corresponding path program 7 times [2021-11-21 00:55:17,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:17,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730246474] [2021-11-21 00:55:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:17,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:18,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730246474] [2021-11-21 00:55:18,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730246474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:18,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:18,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:55:18,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626236250] [2021-11-21 00:55:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:18,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:55:18,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:55:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:55:18,546 INFO L87 Difference]: Start difference. First operand 568 states and 1747 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:24,141 INFO L93 Difference]: Finished difference Result 1963 states and 5725 transitions. [2021-11-21 00:55:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-21 00:55:24,141 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:24,156 INFO L225 Difference]: With dead ends: 1963 [2021-11-21 00:55:24,157 INFO L226 Difference]: Without dead ends: 1956 [2021-11-21 00:55:24,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-21 00:55:24,158 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 345 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:24,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 0 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:55:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-21 00:55:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 566. [2021-11-21 00:55:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.0761061946902655) internal successors, (1738), 565 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1738 transitions. [2021-11-21 00:55:24,193 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1738 transitions. Word has length 36 [2021-11-21 00:55:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:24,193 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1738 transitions. [2021-11-21 00:55:24,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1738 transitions. [2021-11-21 00:55:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:24,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:24,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:24,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:55:24,196 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:24,197 INFO L85 PathProgramCache]: Analyzing trace with hash -478584594, now seen corresponding path program 8 times [2021-11-21 00:55:24,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:24,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088570323] [2021-11-21 00:55:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:24,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:24,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088570323] [2021-11-21 00:55:24,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088570323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:24,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:24,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:24,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605430992] [2021-11-21 00:55:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:24,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:24,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:24,919 INFO L87 Difference]: Start difference. First operand 566 states and 1738 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:29,005 INFO L93 Difference]: Finished difference Result 1673 states and 4861 transitions. [2021-11-21 00:55:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-21 00:55:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:29,017 INFO L225 Difference]: With dead ends: 1673 [2021-11-21 00:55:29,017 INFO L226 Difference]: Without dead ends: 1666 [2021-11-21 00:55:29,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:55:29,019 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 325 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:29,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 0 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:55:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-11-21 00:55:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 562. [2021-11-21 00:55:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.073083778966132) internal successors, (1724), 561 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1724 transitions. [2021-11-21 00:55:29,068 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1724 transitions. Word has length 36 [2021-11-21 00:55:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:29,069 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1724 transitions. [2021-11-21 00:55:29,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1724 transitions. [2021-11-21 00:55:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:29,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:29,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:29,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:55:29,072 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1132061336, now seen corresponding path program 2 times [2021-11-21 00:55:29,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:29,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114711323] [2021-11-21 00:55:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:29,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:29,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114711323] [2021-11-21 00:55:29,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114711323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:29,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:29,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:55:29,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155760887] [2021-11-21 00:55:29,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:29,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:55:29,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:29,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:55:29,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:29,210 INFO L87 Difference]: Start difference. First operand 562 states and 1724 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:29,339 INFO L93 Difference]: Finished difference Result 704 states and 2076 transitions. [2021-11-21 00:55:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:55:29,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:29,344 INFO L225 Difference]: With dead ends: 704 [2021-11-21 00:55:29,344 INFO L226 Difference]: Without dead ends: 682 [2021-11-21 00:55:29,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:29,345 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:29,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-21 00:55:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 562. [2021-11-21 00:55:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.0588235294117645) internal successors, (1716), 561 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1716 transitions. [2021-11-21 00:55:29,365 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1716 transitions. Word has length 36 [2021-11-21 00:55:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:29,365 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1716 transitions. [2021-11-21 00:55:29,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1716 transitions. [2021-11-21 00:55:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:29,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:29,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:29,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:55:29,368 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1887269074, now seen corresponding path program 1 times [2021-11-21 00:55:29,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:29,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893263322] [2021-11-21 00:55:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:29,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:29,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:29,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893263322] [2021-11-21 00:55:29,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893263322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:29,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:29,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:55:29,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465517261] [2021-11-21 00:55:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:29,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:55:29,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:55:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:29,476 INFO L87 Difference]: Start difference. First operand 562 states and 1716 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:29,651 INFO L93 Difference]: Finished difference Result 860 states and 2510 transitions. [2021-11-21 00:55:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:55:29,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:29,654 INFO L225 Difference]: With dead ends: 860 [2021-11-21 00:55:29,655 INFO L226 Difference]: Without dead ends: 827 [2021-11-21 00:55:29,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:55:29,655 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:29,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:55:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-11-21 00:55:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 607. [2021-11-21 00:55:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 3.0247524752475248) internal successors, (1833), 606 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1833 transitions. [2021-11-21 00:55:29,679 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1833 transitions. Word has length 36 [2021-11-21 00:55:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:29,680 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 1833 transitions. [2021-11-21 00:55:29,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1833 transitions. [2021-11-21 00:55:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:29,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:29,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:29,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:55:29,683 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1383209210, now seen corresponding path program 1 times [2021-11-21 00:55:29,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345746653] [2021-11-21 00:55:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:29,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:30,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:30,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345746653] [2021-11-21 00:55:30,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345746653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:30,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:30,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:55:30,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514342763] [2021-11-21 00:55:30,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:30,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:55:30,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:30,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:55:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:55:30,540 INFO L87 Difference]: Start difference. First operand 607 states and 1833 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:31,122 INFO L93 Difference]: Finished difference Result 680 states and 1968 transitions. [2021-11-21 00:55:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:31,124 INFO L225 Difference]: With dead ends: 680 [2021-11-21 00:55:31,124 INFO L226 Difference]: Without dead ends: 663 [2021-11-21 00:55:31,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:31,126 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:31,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:55:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-11-21 00:55:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 641. [2021-11-21 00:55:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.975) internal successors, (1904), 640 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1904 transitions. [2021-11-21 00:55:31,163 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1904 transitions. Word has length 36 [2021-11-21 00:55:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:31,164 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1904 transitions. [2021-11-21 00:55:31,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1904 transitions. [2021-11-21 00:55:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:31,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:31,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:31,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:55:31,167 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash -606833678, now seen corresponding path program 2 times [2021-11-21 00:55:31,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:31,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874896971] [2021-11-21 00:55:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:31,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:31,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:31,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874896971] [2021-11-21 00:55:31,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874896971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:31,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:31,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:55:31,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547032804] [2021-11-21 00:55:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:31,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:55:31,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:55:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:55:31,899 INFO L87 Difference]: Start difference. First operand 641 states and 1904 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:32,345 INFO L93 Difference]: Finished difference Result 660 states and 1934 transitions. [2021-11-21 00:55:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:32,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:32,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:32,347 INFO L225 Difference]: With dead ends: 660 [2021-11-21 00:55:32,348 INFO L226 Difference]: Without dead ends: 649 [2021-11-21 00:55:32,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:32,348 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:32,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:55:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-11-21 00:55:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 643. [2021-11-21 00:55:32,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.970404984423676) internal successors, (1907), 642 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1907 transitions. [2021-11-21 00:55:32,369 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1907 transitions. Word has length 36 [2021-11-21 00:55:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:32,369 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1907 transitions. [2021-11-21 00:55:32,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1907 transitions. [2021-11-21 00:55:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:32,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:32,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:32,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 00:55:32,373 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1557283692, now seen corresponding path program 3 times [2021-11-21 00:55:32,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:32,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383724216] [2021-11-21 00:55:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:32,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:32,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:32,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383724216] [2021-11-21 00:55:32,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383724216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:32,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:32,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:55:32,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339675553] [2021-11-21 00:55:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:32,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:55:32,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:55:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:55:32,943 INFO L87 Difference]: Start difference. First operand 643 states and 1907 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:33,339 INFO L93 Difference]: Finished difference Result 658 states and 1928 transitions. [2021-11-21 00:55:33,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:33,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:33,341 INFO L225 Difference]: With dead ends: 658 [2021-11-21 00:55:33,341 INFO L226 Difference]: Without dead ends: 639 [2021-11-21 00:55:33,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:33,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:33,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:55:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-21 00:55:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 627. [2021-11-21 00:55:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 2.976038338658147) internal successors, (1863), 626 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1863 transitions. [2021-11-21 00:55:33,362 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1863 transitions. Word has length 36 [2021-11-21 00:55:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:33,362 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1863 transitions. [2021-11-21 00:55:33,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1863 transitions. [2021-11-21 00:55:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:33,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:33,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:33,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 00:55:33,366 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1527350230, now seen corresponding path program 4 times [2021-11-21 00:55:33,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:33,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249361435] [2021-11-21 00:55:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:33,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:34,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:34,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249361435] [2021-11-21 00:55:34,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249361435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:34,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:34,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:55:34,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596020402] [2021-11-21 00:55:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:34,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:55:34,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:55:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:55:34,047 INFO L87 Difference]: Start difference. First operand 627 states and 1863 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:34,524 INFO L93 Difference]: Finished difference Result 656 states and 1923 transitions. [2021-11-21 00:55:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:34,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:34,526 INFO L225 Difference]: With dead ends: 656 [2021-11-21 00:55:34,527 INFO L226 Difference]: Without dead ends: 645 [2021-11-21 00:55:34,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:34,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:34,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:55:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-11-21 00:55:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 641. [2021-11-21 00:55:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.96875) internal successors, (1900), 640 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1900 transitions. [2021-11-21 00:55:34,548 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1900 transitions. Word has length 36 [2021-11-21 00:55:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:34,548 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1900 transitions. [2021-11-21 00:55:34,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1900 transitions. [2021-11-21 00:55:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:34,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:34,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:34,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-21 00:55:34,552 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1817167052, now seen corresponding path program 5 times [2021-11-21 00:55:34,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:34,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153640283] [2021-11-21 00:55:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:34,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:35,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:35,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153640283] [2021-11-21 00:55:35,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153640283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:35,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:35,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:55:35,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742490462] [2021-11-21 00:55:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:35,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:55:35,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:55:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:55:35,119 INFO L87 Difference]: Start difference. First operand 641 states and 1900 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:35,588 INFO L93 Difference]: Finished difference Result 654 states and 1917 transitions. [2021-11-21 00:55:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:35,590 INFO L225 Difference]: With dead ends: 654 [2021-11-21 00:55:35,591 INFO L226 Difference]: Without dead ends: 643 [2021-11-21 00:55:35,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:35,592 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:35,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:55:35,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-21 00:55:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 639. [2021-11-21 00:55:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 2.9670846394984327) internal successors, (1893), 638 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1893 transitions. [2021-11-21 00:55:35,613 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1893 transitions. Word has length 36 [2021-11-21 00:55:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:35,614 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 1893 transitions. [2021-11-21 00:55:35,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1893 transitions. [2021-11-21 00:55:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:35,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:35,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:35,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 00:55:35,617 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 487049394, now seen corresponding path program 6 times [2021-11-21 00:55:35,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:35,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593885139] [2021-11-21 00:55:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:35,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:36,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593885139] [2021-11-21 00:55:36,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593885139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:36,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:36,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:55:36,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447549090] [2021-11-21 00:55:36,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:36,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:55:36,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:55:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:55:36,326 INFO L87 Difference]: Start difference. First operand 639 states and 1893 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:36,726 INFO L93 Difference]: Finished difference Result 690 states and 1978 transitions. [2021-11-21 00:55:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:55:36,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:36,728 INFO L225 Difference]: With dead ends: 690 [2021-11-21 00:55:36,728 INFO L226 Difference]: Without dead ends: 665 [2021-11-21 00:55:36,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:55:36,729 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:36,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:55:36,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-21 00:55:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 649. [2021-11-21 00:55:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 2.912037037037037) internal successors, (1887), 648 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1887 transitions. [2021-11-21 00:55:36,750 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1887 transitions. Word has length 36 [2021-11-21 00:55:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:36,750 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 1887 transitions. [2021-11-21 00:55:36,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1887 transitions. [2021-11-21 00:55:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:36,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:36,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:36,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-21 00:55:36,753 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash 187194346, now seen corresponding path program 2 times [2021-11-21 00:55:36,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:36,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859814335] [2021-11-21 00:55:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:36,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:36,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859814335] [2021-11-21 00:55:36,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859814335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:36,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:36,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:55:36,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781324387] [2021-11-21 00:55:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:36,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:55:36,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:55:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:36,865 INFO L87 Difference]: Start difference. First operand 649 states and 1887 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:37,034 INFO L93 Difference]: Finished difference Result 1021 states and 2932 transitions. [2021-11-21 00:55:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:55:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:37,038 INFO L225 Difference]: With dead ends: 1021 [2021-11-21 00:55:37,038 INFO L226 Difference]: Without dead ends: 1021 [2021-11-21 00:55:37,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:37,039 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:37,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:55:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-21 00:55:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 737. [2021-11-21 00:55:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 2.9089673913043477) internal successors, (2141), 736 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 2141 transitions. [2021-11-21 00:55:37,073 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 2141 transitions. Word has length 36 [2021-11-21 00:55:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:37,073 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 2141 transitions. [2021-11-21 00:55:37,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 2141 transitions. [2021-11-21 00:55:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:37,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:37,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:37,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-21 00:55:37,077 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2130670140, now seen corresponding path program 3 times [2021-11-21 00:55:37,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:37,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157351894] [2021-11-21 00:55:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:37,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:37,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:37,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157351894] [2021-11-21 00:55:37,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157351894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:37,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:37,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:55:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657893867] [2021-11-21 00:55:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:37,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:55:37,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:55:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:37,220 INFO L87 Difference]: Start difference. First operand 737 states and 2141 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:37,351 INFO L93 Difference]: Finished difference Result 914 states and 2579 transitions. [2021-11-21 00:55:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:55:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:37,354 INFO L225 Difference]: With dead ends: 914 [2021-11-21 00:55:37,354 INFO L226 Difference]: Without dead ends: 892 [2021-11-21 00:55:37,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:37,355 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:37,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:55:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-21 00:55:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 737. [2021-11-21 00:55:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 2.8980978260869565) internal successors, (2133), 736 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 2133 transitions. [2021-11-21 00:55:37,377 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 2133 transitions. Word has length 36 [2021-11-21 00:55:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:37,378 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 2133 transitions. [2021-11-21 00:55:37,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 2133 transitions. [2021-11-21 00:55:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:37,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:37,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:37,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 00:55:37,386 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash 177919302, now seen corresponding path program 3 times [2021-11-21 00:55:37,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:37,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562748474] [2021-11-21 00:55:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:37,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:37,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:37,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562748474] [2021-11-21 00:55:37,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562748474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:37,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:37,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:55:37,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194514154] [2021-11-21 00:55:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:37,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:55:37,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:55:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:55:37,503 INFO L87 Difference]: Start difference. First operand 737 states and 2133 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:37,682 INFO L93 Difference]: Finished difference Result 1042 states and 2864 transitions. [2021-11-21 00:55:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:55:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:37,685 INFO L225 Difference]: With dead ends: 1042 [2021-11-21 00:55:37,685 INFO L226 Difference]: Without dead ends: 965 [2021-11-21 00:55:37,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:55:37,686 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:37,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:55:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-11-21 00:55:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 800. [2021-11-21 00:55:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.8573216520650813) internal successors, (2283), 799 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2283 transitions. [2021-11-21 00:55:37,714 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2283 transitions. Word has length 36 [2021-11-21 00:55:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:37,714 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2283 transitions. [2021-11-21 00:55:37,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:37,714 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2283 transitions. [2021-11-21 00:55:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:37,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:37,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:37,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 00:55:37,717 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash -653617658, now seen corresponding path program 9 times [2021-11-21 00:55:37,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971346691] [2021-11-21 00:55:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:37,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:38,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:38,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971346691] [2021-11-21 00:55:38,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971346691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:38,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:38,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:38,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614746199] [2021-11-21 00:55:38,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:38,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:38,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:38,334 INFO L87 Difference]: Start difference. First operand 800 states and 2283 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:41,950 INFO L93 Difference]: Finished difference Result 1860 states and 5091 transitions. [2021-11-21 00:55:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:55:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:41,956 INFO L225 Difference]: With dead ends: 1860 [2021-11-21 00:55:41,956 INFO L226 Difference]: Without dead ends: 1853 [2021-11-21 00:55:41,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:55:41,957 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 291 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:41,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 0 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:55:41,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-11-21 00:55:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 810. [2021-11-21 00:55:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 2.8516687268232386) internal successors, (2307), 809 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2307 transitions. [2021-11-21 00:55:41,995 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2307 transitions. Word has length 36 [2021-11-21 00:55:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:41,995 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2307 transitions. [2021-11-21 00:55:41,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2307 transitions. [2021-11-21 00:55:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:41,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:41,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:41,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-21 00:55:41,999 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1810326762, now seen corresponding path program 10 times [2021-11-21 00:55:41,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:42,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489157965] [2021-11-21 00:55:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:42,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:42,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:42,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489157965] [2021-11-21 00:55:42,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489157965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:42,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:42,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:42,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867383514] [2021-11-21 00:55:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:42,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:42,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:42,620 INFO L87 Difference]: Start difference. First operand 810 states and 2307 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:44,862 INFO L93 Difference]: Finished difference Result 1811 states and 4897 transitions. [2021-11-21 00:55:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:55:44,863 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:44,868 INFO L225 Difference]: With dead ends: 1811 [2021-11-21 00:55:44,868 INFO L226 Difference]: Without dead ends: 1804 [2021-11-21 00:55:44,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:55:44,870 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 289 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:44,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 0 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:55:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-11-21 00:55:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 814. [2021-11-21 00:55:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.854858548585486) internal successors, (2321), 813 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2321 transitions. [2021-11-21 00:55:44,906 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2321 transitions. Word has length 36 [2021-11-21 00:55:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:44,906 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 2321 transitions. [2021-11-21 00:55:44,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2321 transitions. [2021-11-21 00:55:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:44,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:44,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:44,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 00:55:44,909 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1047145978, now seen corresponding path program 11 times [2021-11-21 00:55:44,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080427820] [2021-11-21 00:55:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:44,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:45,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:45,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080427820] [2021-11-21 00:55:45,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080427820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:45,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:45,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:45,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226363181] [2021-11-21 00:55:45,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:45,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:45,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:45,607 INFO L87 Difference]: Start difference. First operand 814 states and 2321 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:48,526 INFO L93 Difference]: Finished difference Result 1932 states and 5285 transitions. [2021-11-21 00:55:48,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 00:55:48,527 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:48,533 INFO L225 Difference]: With dead ends: 1932 [2021-11-21 00:55:48,534 INFO L226 Difference]: Without dead ends: 1925 [2021-11-21 00:55:48,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:55:48,535 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 324 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:48,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 0 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:55:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2021-11-21 00:55:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 816. [2021-11-21 00:55:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 2.8588957055214723) internal successors, (2330), 815 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 2330 transitions. [2021-11-21 00:55:48,573 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 2330 transitions. Word has length 36 [2021-11-21 00:55:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:48,574 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 2330 transitions. [2021-11-21 00:55:48,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2330 transitions. [2021-11-21 00:55:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:48,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:48,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:48,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 00:55:48,577 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1976188736, now seen corresponding path program 12 times [2021-11-21 00:55:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465623841] [2021-11-21 00:55:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:48,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:49,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:49,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465623841] [2021-11-21 00:55:49,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465623841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:49,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:49,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:55:49,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566563964] [2021-11-21 00:55:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:55:49,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:55:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:55:49,425 INFO L87 Difference]: Start difference. First operand 816 states and 2330 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:50,230 INFO L93 Difference]: Finished difference Result 1741 states and 4715 transitions. [2021-11-21 00:55:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:55:50,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:50,236 INFO L225 Difference]: With dead ends: 1741 [2021-11-21 00:55:50,236 INFO L226 Difference]: Without dead ends: 1734 [2021-11-21 00:55:50,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:55:50,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 204 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:50,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 0 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:55:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-11-21 00:55:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 828. [2021-11-21 00:55:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 2.8585247883917777) internal successors, (2364), 827 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2364 transitions. [2021-11-21 00:55:50,272 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2364 transitions. Word has length 36 [2021-11-21 00:55:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:50,273 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2364 transitions. [2021-11-21 00:55:50,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2364 transitions. [2021-11-21 00:55:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:50,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:50,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 00:55:50,276 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash -697444114, now seen corresponding path program 13 times [2021-11-21 00:55:50,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:50,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579136839] [2021-11-21 00:55:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:50,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:50,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:50,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579136839] [2021-11-21 00:55:50,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579136839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:50,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:50,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:50,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776023484] [2021-11-21 00:55:50,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:50,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:50,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:50,976 INFO L87 Difference]: Start difference. First operand 828 states and 2364 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:55:56,620 INFO L93 Difference]: Finished difference Result 2188 states and 6001 transitions. [2021-11-21 00:55:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-21 00:55:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:55:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:55:56,626 INFO L225 Difference]: With dead ends: 2188 [2021-11-21 00:55:56,626 INFO L226 Difference]: Without dead ends: 2181 [2021-11-21 00:55:56,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=621, Invalid=1929, Unknown=0, NotChecked=0, Total=2550 [2021-11-21 00:55:56,628 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:55:56,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:55:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-11-21 00:55:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 824. [2021-11-21 00:55:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 2.8554070473876063) internal successors, (2350), 823 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2350 transitions. [2021-11-21 00:55:56,676 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2350 transitions. Word has length 36 [2021-11-21 00:55:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:55:56,676 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 2350 transitions. [2021-11-21 00:55:56,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:55:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2350 transitions. [2021-11-21 00:55:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:55:56,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:55:56,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:55:56,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 00:55:56,679 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:55:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:55:56,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1141994120, now seen corresponding path program 14 times [2021-11-21 00:55:56,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:55:56,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310599791] [2021-11-21 00:55:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:55:56,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:55:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:55:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:55:57,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:55:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310599791] [2021-11-21 00:55:57,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310599791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:55:57,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:55:57,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:55:57,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025191517] [2021-11-21 00:55:57,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:55:57,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:55:57,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:55:57,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:55:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:55:57,233 INFO L87 Difference]: Start difference. First operand 824 states and 2350 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:01,893 INFO L93 Difference]: Finished difference Result 2186 states and 6008 transitions. [2021-11-21 00:56:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:56:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:01,898 INFO L225 Difference]: With dead ends: 2186 [2021-11-21 00:56:01,898 INFO L226 Difference]: Without dead ends: 2179 [2021-11-21 00:56:01,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=557, Invalid=1699, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 00:56:01,900 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 337 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:01,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 0 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:56:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2021-11-21 00:56:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 822. [2021-11-21 00:56:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 2.851400730816078) internal successors, (2341), 821 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2341 transitions. [2021-11-21 00:56:01,936 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2341 transitions. Word has length 36 [2021-11-21 00:56:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:01,937 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 2341 transitions. [2021-11-21 00:56:01,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2341 transitions. [2021-11-21 00:56:01,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:01,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:01,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:01,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 00:56:01,940 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash -776591442, now seen corresponding path program 15 times [2021-11-21 00:56:01,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387619283] [2021-11-21 00:56:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:01,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:02,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:02,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387619283] [2021-11-21 00:56:02,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387619283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:02,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:02,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-21 00:56:02,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439590206] [2021-11-21 00:56:02,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:02,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:56:02,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:02,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:56:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:56:02,645 INFO L87 Difference]: Start difference. First operand 822 states and 2341 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:06,336 INFO L93 Difference]: Finished difference Result 1938 states and 5265 transitions. [2021-11-21 00:56:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 00:56:06,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:06,339 INFO L225 Difference]: With dead ends: 1938 [2021-11-21 00:56:06,339 INFO L226 Difference]: Without dead ends: 1931 [2021-11-21 00:56:06,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:56:06,340 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:06,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:56:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-11-21 00:56:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 810. [2021-11-21 00:56:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 2.8516687268232386) internal successors, (2307), 809 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2307 transitions. [2021-11-21 00:56:06,370 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2307 transitions. Word has length 36 [2021-11-21 00:56:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:06,371 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2307 transitions. [2021-11-21 00:56:06,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2307 transitions. [2021-11-21 00:56:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:06,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:06,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:06,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-21 00:56:06,374 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash 477449972, now seen corresponding path program 16 times [2021-11-21 00:56:06,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289816826] [2021-11-21 00:56:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:06,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:06,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:06,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289816826] [2021-11-21 00:56:06,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289816826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:06,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:06,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:06,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525870234] [2021-11-21 00:56:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:06,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:06,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:06,958 INFO L87 Difference]: Start difference. First operand 810 states and 2307 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:07,919 INFO L93 Difference]: Finished difference Result 1874 states and 5237 transitions. [2021-11-21 00:56:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:07,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:07,922 INFO L225 Difference]: With dead ends: 1874 [2021-11-21 00:56:07,922 INFO L226 Difference]: Without dead ends: 1867 [2021-11-21 00:56:07,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:07,923 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 174 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:07,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 0 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:56:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-21 00:56:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 825. [2021-11-21 00:56:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 2.8640776699029127) internal successors, (2360), 824 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2360 transitions. [2021-11-21 00:56:07,955 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2360 transitions. Word has length 36 [2021-11-21 00:56:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:07,955 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 2360 transitions. [2021-11-21 00:56:07,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:07,956 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2360 transitions. [2021-11-21 00:56:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:07,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:07,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:07,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-21 00:56:07,959 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash -253317686, now seen corresponding path program 17 times [2021-11-21 00:56:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74060814] [2021-11-21 00:56:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:07,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:08,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74060814] [2021-11-21 00:56:08,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74060814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:08,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:08,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 00:56:08,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809096782] [2021-11-21 00:56:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:08,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:56:08,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:56:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:56:08,454 INFO L87 Difference]: Start difference. First operand 825 states and 2360 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:09,184 INFO L93 Difference]: Finished difference Result 1956 states and 5427 transitions. [2021-11-21 00:56:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:09,187 INFO L225 Difference]: With dead ends: 1956 [2021-11-21 00:56:09,187 INFO L226 Difference]: Without dead ends: 1949 [2021-11-21 00:56:09,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:56:09,188 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:09,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2021-11-21 00:56:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 843. [2021-11-21 00:56:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.870546318289786) internal successors, (2417), 842 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2417 transitions. [2021-11-21 00:56:09,217 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2417 transitions. Word has length 36 [2021-11-21 00:56:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:09,217 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2417 transitions. [2021-11-21 00:56:09,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2417 transitions. [2021-11-21 00:56:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:09,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:09,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:09,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-21 00:56:09,220 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:09,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1182360444, now seen corresponding path program 18 times [2021-11-21 00:56:09,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:09,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907248732] [2021-11-21 00:56:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:09,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:09,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907248732] [2021-11-21 00:56:09,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907248732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:09,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:09,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:09,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719919120] [2021-11-21 00:56:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:09,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:09,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:09,598 INFO L87 Difference]: Start difference. First operand 843 states and 2417 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:10,302 INFO L93 Difference]: Finished difference Result 1952 states and 5420 transitions. [2021-11-21 00:56:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:10,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:10,306 INFO L225 Difference]: With dead ends: 1952 [2021-11-21 00:56:10,306 INFO L226 Difference]: Without dead ends: 1945 [2021-11-21 00:56:10,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:10,306 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:10,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:10,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2021-11-21 00:56:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 819. [2021-11-21 00:56:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.8643031784841075) internal successors, (2343), 818 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2343 transitions. [2021-11-21 00:56:10,335 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2343 transitions. Word has length 36 [2021-11-21 00:56:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:10,335 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2343 transitions. [2021-11-21 00:56:10,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2343 transitions. [2021-11-21 00:56:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:10,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:10,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:10,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-21 00:56:10,339 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash -534093178, now seen corresponding path program 19 times [2021-11-21 00:56:10,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:10,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823064625] [2021-11-21 00:56:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:10,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:10,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:10,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823064625] [2021-11-21 00:56:10,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823064625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:10,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:10,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:10,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842882301] [2021-11-21 00:56:10,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:10,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:10,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:10,974 INFO L87 Difference]: Start difference. First operand 819 states and 2343 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:12,027 INFO L93 Difference]: Finished difference Result 1791 states and 5027 transitions. [2021-11-21 00:56:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:12,030 INFO L225 Difference]: With dead ends: 1791 [2021-11-21 00:56:12,030 INFO L226 Difference]: Without dead ends: 1784 [2021-11-21 00:56:12,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:12,031 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 243 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:12,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 0 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-11-21 00:56:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 822. [2021-11-21 00:56:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 2.862362971985384) internal successors, (2350), 821 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2350 transitions. [2021-11-21 00:56:12,055 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2350 transitions. Word has length 36 [2021-11-21 00:56:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:12,055 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 2350 transitions. [2021-11-21 00:56:12,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2350 transitions. [2021-11-21 00:56:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:12,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:12,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:12,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-21 00:56:12,058 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1326661840, now seen corresponding path program 20 times [2021-11-21 00:56:12,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:12,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095938547] [2021-11-21 00:56:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:12,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:12,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:12,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095938547] [2021-11-21 00:56:12,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095938547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:12,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:12,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:12,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329047232] [2021-11-21 00:56:12,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:12,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:12,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:12,547 INFO L87 Difference]: Start difference. First operand 822 states and 2350 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:13,323 INFO L93 Difference]: Finished difference Result 1817 states and 5082 transitions. [2021-11-21 00:56:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:13,326 INFO L225 Difference]: With dead ends: 1817 [2021-11-21 00:56:13,326 INFO L226 Difference]: Without dead ends: 1803 [2021-11-21 00:56:13,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:13,327 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 204 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:13,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 0 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-21 00:56:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 831. [2021-11-21 00:56:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.8566265060240963) internal successors, (2371), 830 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2371 transitions. [2021-11-21 00:56:13,350 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2371 transitions. Word has length 36 [2021-11-21 00:56:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:13,350 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2371 transitions. [2021-11-21 00:56:13,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2371 transitions. [2021-11-21 00:56:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:13,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:13,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:13,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-21 00:56:13,353 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:13,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2085041196, now seen corresponding path program 21 times [2021-11-21 00:56:13,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:13,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131816923] [2021-11-21 00:56:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:13,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:13,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131816923] [2021-11-21 00:56:13,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131816923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:13,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:13,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:13,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479913872] [2021-11-21 00:56:13,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:13,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:13,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:13,896 INFO L87 Difference]: Start difference. First operand 831 states and 2371 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:14,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:14,553 INFO L93 Difference]: Finished difference Result 1817 states and 5080 transitions. [2021-11-21 00:56:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:14,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:14,556 INFO L225 Difference]: With dead ends: 1817 [2021-11-21 00:56:14,556 INFO L226 Difference]: Without dead ends: 1810 [2021-11-21 00:56:14,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:14,557 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 245 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:14,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 0 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-11-21 00:56:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 828. [2021-11-21 00:56:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 2.8585247883917777) internal successors, (2364), 827 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2364 transitions. [2021-11-21 00:56:14,577 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2364 transitions. Word has length 36 [2021-11-21 00:56:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:14,578 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2364 transitions. [2021-11-21 00:56:14,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2364 transitions. [2021-11-21 00:56:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:14,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:14,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:14,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-21 00:56:14,579 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 147700922, now seen corresponding path program 22 times [2021-11-21 00:56:14,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899793128] [2021-11-21 00:56:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:14,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:15,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:15,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899793128] [2021-11-21 00:56:15,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899793128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:15,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:15,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:15,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736070221] [2021-11-21 00:56:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:15,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:15,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:15,049 INFO L87 Difference]: Start difference. First operand 828 states and 2364 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:15,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:15,775 INFO L93 Difference]: Finished difference Result 2079 states and 5833 transitions. [2021-11-21 00:56:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:15,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:15,778 INFO L225 Difference]: With dead ends: 2079 [2021-11-21 00:56:15,778 INFO L226 Difference]: Without dead ends: 2065 [2021-11-21 00:56:15,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:15,780 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 216 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:15,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 0 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-21 00:56:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 864. [2021-11-21 00:56:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.895712630359212) internal successors, (2499), 863 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2499 transitions. [2021-11-21 00:56:15,803 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2499 transitions. Word has length 36 [2021-11-21 00:56:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:15,804 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2499 transitions. [2021-11-21 00:56:15,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2499 transitions. [2021-11-21 00:56:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:15,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:15,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:15,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-21 00:56:15,807 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 906080278, now seen corresponding path program 23 times [2021-11-21 00:56:15,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649361942] [2021-11-21 00:56:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:15,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:16,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:16,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649361942] [2021-11-21 00:56:16,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649361942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:16,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:16,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:16,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794331041] [2021-11-21 00:56:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:16,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:16,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:16,160 INFO L87 Difference]: Start difference. First operand 864 states and 2499 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:16,816 INFO L93 Difference]: Finished difference Result 2079 states and 5831 transitions. [2021-11-21 00:56:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:16,819 INFO L225 Difference]: With dead ends: 2079 [2021-11-21 00:56:16,819 INFO L226 Difference]: Without dead ends: 2072 [2021-11-21 00:56:16,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:16,820 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:16,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-11-21 00:56:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 855. [2021-11-21 00:56:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 2.901639344262295) internal successors, (2478), 854 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2478 transitions. [2021-11-21 00:56:16,846 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2478 transitions. Word has length 36 [2021-11-21 00:56:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:16,847 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 2478 transitions. [2021-11-21 00:56:16,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2478 transitions. [2021-11-21 00:56:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:16,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:16,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:16,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-21 00:56:16,850 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1412146496, now seen corresponding path program 24 times [2021-11-21 00:56:16,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:16,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537629534] [2021-11-21 00:56:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:16,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:17,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:17,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537629534] [2021-11-21 00:56:17,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537629534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:17,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:17,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:56:17,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719723898] [2021-11-21 00:56:17,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:17,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:56:17,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:56:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:56:17,341 INFO L87 Difference]: Start difference. First operand 855 states and 2478 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:18,627 INFO L93 Difference]: Finished difference Result 2005 states and 5658 transitions. [2021-11-21 00:56:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 00:56:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:18,631 INFO L225 Difference]: With dead ends: 2005 [2021-11-21 00:56:18,631 INFO L226 Difference]: Without dead ends: 1991 [2021-11-21 00:56:18,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:56:18,633 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:18,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:56:18,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2021-11-21 00:56:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 869. [2021-11-21 00:56:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 2.9182027649769586) internal successors, (2533), 868 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 2533 transitions. [2021-11-21 00:56:18,663 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 2533 transitions. Word has length 36 [2021-11-21 00:56:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:18,663 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 2533 transitions. [2021-11-21 00:56:18,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 2533 transitions. [2021-11-21 00:56:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:18,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:18,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:18,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-21 00:56:18,666 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1291410886, now seen corresponding path program 25 times [2021-11-21 00:56:18,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:18,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393606958] [2021-11-21 00:56:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:18,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:19,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:19,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393606958] [2021-11-21 00:56:19,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393606958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:19,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:19,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:56:19,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979412519] [2021-11-21 00:56:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:19,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:56:19,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:56:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:56:19,120 INFO L87 Difference]: Start difference. First operand 869 states and 2533 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:20,565 INFO L93 Difference]: Finished difference Result 2099 states and 5885 transitions. [2021-11-21 00:56:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 00:56:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:20,568 INFO L225 Difference]: With dead ends: 2099 [2021-11-21 00:56:20,568 INFO L226 Difference]: Without dead ends: 2092 [2021-11-21 00:56:20,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-11-21 00:56:20,569 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:20,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:56:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2021-11-21 00:56:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 864. [2021-11-21 00:56:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.9200463499420626) internal successors, (2520), 863 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2520 transitions. [2021-11-21 00:56:20,598 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2520 transitions. Word has length 36 [2021-11-21 00:56:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:20,599 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2520 transitions. [2021-11-21 00:56:20,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2520 transitions. [2021-11-21 00:56:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:20,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:20,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:20,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-21 00:56:20,602 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1599071046, now seen corresponding path program 26 times [2021-11-21 00:56:20,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:20,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219038624] [2021-11-21 00:56:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:20,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:21,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:21,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219038624] [2021-11-21 00:56:21,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219038624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:21,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:21,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:56:21,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135139779] [2021-11-21 00:56:21,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:21,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:56:21,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:21,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:56:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:56:21,021 INFO L87 Difference]: Start difference. First operand 864 states and 2520 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:22,458 INFO L93 Difference]: Finished difference Result 2302 states and 6489 transitions. [2021-11-21 00:56:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:56:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:22,462 INFO L225 Difference]: With dead ends: 2302 [2021-11-21 00:56:22,462 INFO L226 Difference]: Without dead ends: 2295 [2021-11-21 00:56:22,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:56:22,463 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 301 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:22,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 0 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:56:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2021-11-21 00:56:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 866. [2021-11-21 00:56:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 2.923699421965318) internal successors, (2529), 865 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2529 transitions. [2021-11-21 00:56:22,490 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2529 transitions. Word has length 36 [2021-11-21 00:56:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:22,491 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 2529 transitions. [2021-11-21 00:56:22,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:22,491 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2529 transitions. [2021-11-21 00:56:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:22,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:22,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:22,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-21 00:56:22,493 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash 670028288, now seen corresponding path program 27 times [2021-11-21 00:56:22,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:22,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270051319] [2021-11-21 00:56:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:22,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:23,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:23,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270051319] [2021-11-21 00:56:23,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270051319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:23,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:23,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:23,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225878263] [2021-11-21 00:56:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:23,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:23,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:23,133 INFO L87 Difference]: Start difference. First operand 866 states and 2529 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:23,933 INFO L93 Difference]: Finished difference Result 2156 states and 6041 transitions. [2021-11-21 00:56:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:23,938 INFO L225 Difference]: With dead ends: 2156 [2021-11-21 00:56:23,938 INFO L226 Difference]: Without dead ends: 2149 [2021-11-21 00:56:23,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:23,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 272 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:23,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 0 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-21 00:56:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 882. [2021-11-21 00:56:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.9250851305334846) internal successors, (2577), 881 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2577 transitions. [2021-11-21 00:56:23,976 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2577 transitions. Word has length 36 [2021-11-21 00:56:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:23,977 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2577 transitions. [2021-11-21 00:56:23,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2577 transitions. [2021-11-21 00:56:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:23,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:23,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:23,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-21 00:56:23,980 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2034629200, now seen corresponding path program 28 times [2021-11-21 00:56:23,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:23,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281510167] [2021-11-21 00:56:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:23,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:24,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:24,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281510167] [2021-11-21 00:56:24,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281510167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:24,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:24,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:24,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269274970] [2021-11-21 00:56:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:24,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:24,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:24,450 INFO L87 Difference]: Start difference. First operand 882 states and 2577 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:25,167 INFO L93 Difference]: Finished difference Result 2158 states and 6040 transitions. [2021-11-21 00:56:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:25,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:25,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:25,171 INFO L225 Difference]: With dead ends: 2158 [2021-11-21 00:56:25,171 INFO L226 Difference]: Without dead ends: 2151 [2021-11-21 00:56:25,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:25,171 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 289 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:25,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 0 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-11-21 00:56:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 864. [2021-11-21 00:56:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.9200463499420626) internal successors, (2520), 863 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2520 transitions. [2021-11-21 00:56:25,195 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2520 transitions. Word has length 36 [2021-11-21 00:56:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:25,196 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2520 transitions. [2021-11-21 00:56:25,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2520 transitions. [2021-11-21 00:56:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:25,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:25,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:25,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-21 00:56:25,199 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash 589200976, now seen corresponding path program 29 times [2021-11-21 00:56:25,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:25,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532156623] [2021-11-21 00:56:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:25,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:25,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532156623] [2021-11-21 00:56:25,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532156623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:25,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:25,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:25,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145684127] [2021-11-21 00:56:25,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:25,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:25,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:25,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:25,516 INFO L87 Difference]: Start difference. First operand 864 states and 2520 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:26,324 INFO L93 Difference]: Finished difference Result 2119 states and 5956 transitions. [2021-11-21 00:56:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:26,329 INFO L225 Difference]: With dead ends: 2119 [2021-11-21 00:56:26,329 INFO L226 Difference]: Without dead ends: 2112 [2021-11-21 00:56:26,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:26,330 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 282 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:26,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 0 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-11-21 00:56:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 879. [2021-11-21 00:56:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.920273348519362) internal successors, (2564), 878 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 2564 transitions. [2021-11-21 00:56:26,360 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 2564 transitions. Word has length 36 [2021-11-21 00:56:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:26,361 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 2564 transitions. [2021-11-21 00:56:26,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 2564 transitions. [2021-11-21 00:56:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:26,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:26,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:26,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-21 00:56:26,364 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1886123902, now seen corresponding path program 30 times [2021-11-21 00:56:26,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:26,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872971652] [2021-11-21 00:56:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:26,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:26,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872971652] [2021-11-21 00:56:26,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872971652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:26,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:26,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:26,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155881204] [2021-11-21 00:56:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:26,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:26,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:26,796 INFO L87 Difference]: Start difference. First operand 879 states and 2564 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:27,650 INFO L93 Difference]: Finished difference Result 2107 states and 5930 transitions. [2021-11-21 00:56:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:27,655 INFO L225 Difference]: With dead ends: 2107 [2021-11-21 00:56:27,655 INFO L226 Difference]: Without dead ends: 2093 [2021-11-21 00:56:27,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:27,656 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 192 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:27,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 0 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2021-11-21 00:56:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 865. [2021-11-21 00:56:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 2.8981481481481484) internal successors, (2504), 864 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2504 transitions. [2021-11-21 00:56:27,691 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2504 transitions. Word has length 36 [2021-11-21 00:56:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:27,691 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2504 transitions. [2021-11-21 00:56:27,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2504 transitions. [2021-11-21 00:56:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:27,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:27,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:27,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-21 00:56:27,695 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash 510237004, now seen corresponding path program 7 times [2021-11-21 00:56:27,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457495176] [2021-11-21 00:56:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:27,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:28,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:28,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457495176] [2021-11-21 00:56:28,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457495176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:28,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:28,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624571310] [2021-11-21 00:56:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:28,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:28,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:28,088 INFO L87 Difference]: Start difference. First operand 865 states and 2504 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:28,511 INFO L93 Difference]: Finished difference Result 958 states and 2710 transitions. [2021-11-21 00:56:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:28,513 INFO L225 Difference]: With dead ends: 958 [2021-11-21 00:56:28,513 INFO L226 Difference]: Without dead ends: 941 [2021-11-21 00:56:28,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:28,514 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:28,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-11-21 00:56:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 895. [2021-11-21 00:56:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 2.9038031319910513) internal successors, (2596), 894 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2596 transitions. [2021-11-21 00:56:28,532 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2596 transitions. Word has length 36 [2021-11-21 00:56:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:28,533 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 2596 transitions. [2021-11-21 00:56:28,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2596 transitions. [2021-11-21 00:56:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:28,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:28,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:28,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-21 00:56:28,536 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1479805884, now seen corresponding path program 8 times [2021-11-21 00:56:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:28,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272041455] [2021-11-21 00:56:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:28,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:28,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:28,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272041455] [2021-11-21 00:56:28,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272041455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:28,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:28,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:28,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504398620] [2021-11-21 00:56:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:28,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:28,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:28,877 INFO L87 Difference]: Start difference. First operand 895 states and 2596 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:29,215 INFO L93 Difference]: Finished difference Result 928 states and 2661 transitions. [2021-11-21 00:56:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:29,217 INFO L225 Difference]: With dead ends: 928 [2021-11-21 00:56:29,217 INFO L226 Difference]: Without dead ends: 917 [2021-11-21 00:56:29,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:29,218 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:29,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-21 00:56:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 897. [2021-11-21 00:56:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 2.900669642857143) internal successors, (2599), 896 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 2599 transitions. [2021-11-21 00:56:29,235 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 2599 transitions. Word has length 36 [2021-11-21 00:56:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:29,235 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 2599 transitions. [2021-11-21 00:56:29,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 2599 transitions. [2021-11-21 00:56:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:29,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:29,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:29,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-21 00:56:29,237 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1864711398, now seen corresponding path program 9 times [2021-11-21 00:56:29,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:29,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282916882] [2021-11-21 00:56:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:29,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:29,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:29,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282916882] [2021-11-21 00:56:29,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282916882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:29,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:29,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:29,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344143875] [2021-11-21 00:56:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:29,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:29,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:29,744 INFO L87 Difference]: Start difference. First operand 897 states and 2599 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:30,049 INFO L93 Difference]: Finished difference Result 926 states and 2655 transitions. [2021-11-21 00:56:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:30,051 INFO L225 Difference]: With dead ends: 926 [2021-11-21 00:56:30,051 INFO L226 Difference]: Without dead ends: 907 [2021-11-21 00:56:30,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:56:30,052 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:30,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-21 00:56:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 871. [2021-11-21 00:56:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.910344827586207) internal successors, (2532), 870 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2532 transitions. [2021-11-21 00:56:30,071 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2532 transitions. Word has length 36 [2021-11-21 00:56:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:30,072 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2532 transitions. [2021-11-21 00:56:30,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2532 transitions. [2021-11-21 00:56:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:30,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:30,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:30,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-21 00:56:30,075 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:30,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1684496906, now seen corresponding path program 10 times [2021-11-21 00:56:30,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:30,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258696167] [2021-11-21 00:56:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:30,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:30,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:30,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258696167] [2021-11-21 00:56:30,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258696167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:30,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:30,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:30,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142447394] [2021-11-21 00:56:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:30,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:30,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:31,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:31,000 INFO L87 Difference]: Start difference. First operand 871 states and 2532 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:31,530 INFO L93 Difference]: Finished difference Result 977 states and 2731 transitions. [2021-11-21 00:56:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:31,532 INFO L225 Difference]: With dead ends: 977 [2021-11-21 00:56:31,532 INFO L226 Difference]: Without dead ends: 960 [2021-11-21 00:56:31,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:31,533 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:31,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-21 00:56:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 892. [2021-11-21 00:56:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 2.900112233445567) internal successors, (2584), 891 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2584 transitions. [2021-11-21 00:56:31,548 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2584 transitions. Word has length 36 [2021-11-21 00:56:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:31,549 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2584 transitions. [2021-11-21 00:56:31,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2584 transitions. [2021-11-21 00:56:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:31,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:31,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:31,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-21 00:56:31,550 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1308357892, now seen corresponding path program 11 times [2021-11-21 00:56:31,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:31,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178679754] [2021-11-21 00:56:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:31,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:31,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:31,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178679754] [2021-11-21 00:56:31,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178679754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:31,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:31,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:31,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106620667] [2021-11-21 00:56:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:31,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:31,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:31,886 INFO L87 Difference]: Start difference. First operand 892 states and 2584 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:32,257 INFO L93 Difference]: Finished difference Result 963 states and 2702 transitions. [2021-11-21 00:56:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:32,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:32,259 INFO L225 Difference]: With dead ends: 963 [2021-11-21 00:56:32,259 INFO L226 Difference]: Without dead ends: 949 [2021-11-21 00:56:32,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:32,261 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:32,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-11-21 00:56:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 895. [2021-11-21 00:56:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 2.894854586129754) internal successors, (2588), 894 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2588 transitions. [2021-11-21 00:56:32,282 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2588 transitions. Word has length 36 [2021-11-21 00:56:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:32,282 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 2588 transitions. [2021-11-21 00:56:32,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2588 transitions. [2021-11-21 00:56:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:32,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:32,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:32,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-21 00:56:32,285 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:32,286 INFO L85 PathProgramCache]: Analyzing trace with hash 300821862, now seen corresponding path program 12 times [2021-11-21 00:56:32,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:32,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106739906] [2021-11-21 00:56:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:32,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:32,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:32,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106739906] [2021-11-21 00:56:32,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106739906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:32,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:32,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:32,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020653251] [2021-11-21 00:56:32,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:32,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:32,694 INFO L87 Difference]: Start difference. First operand 895 states and 2588 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:33,073 INFO L93 Difference]: Finished difference Result 947 states and 2679 transitions. [2021-11-21 00:56:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:33,075 INFO L225 Difference]: With dead ends: 947 [2021-11-21 00:56:33,075 INFO L226 Difference]: Without dead ends: 923 [2021-11-21 00:56:33,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:33,076 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:33,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-21 00:56:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 871. [2021-11-21 00:56:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.9022988505747125) internal successors, (2525), 870 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2525 transitions. [2021-11-21 00:56:33,087 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2525 transitions. Word has length 36 [2021-11-21 00:56:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:33,088 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2525 transitions. [2021-11-21 00:56:33,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2525 transitions. [2021-11-21 00:56:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:33,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:33,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:33,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-21 00:56:33,090 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash -255213430, now seen corresponding path program 13 times [2021-11-21 00:56:33,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:33,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835773928] [2021-11-21 00:56:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:33,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:33,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:33,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835773928] [2021-11-21 00:56:33,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835773928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:33,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:33,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:33,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653293638] [2021-11-21 00:56:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:33,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:33,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:33,370 INFO L87 Difference]: Start difference. First operand 871 states and 2525 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:33,710 INFO L93 Difference]: Finished difference Result 930 states and 2655 transitions. [2021-11-21 00:56:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:56:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:33,711 INFO L225 Difference]: With dead ends: 930 [2021-11-21 00:56:33,712 INFO L226 Difference]: Without dead ends: 915 [2021-11-21 00:56:33,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:56:33,712 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:33,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-11-21 00:56:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 880. [2021-11-21 00:56:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.8976109215017063) internal successors, (2547), 879 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2547 transitions. [2021-11-21 00:56:33,724 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2547 transitions. Word has length 36 [2021-11-21 00:56:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:33,724 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2547 transitions. [2021-11-21 00:56:33,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2547 transitions. [2021-11-21 00:56:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:33,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:33,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:33,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-21 00:56:33,727 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash -253429492, now seen corresponding path program 14 times [2021-11-21 00:56:33,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865340804] [2021-11-21 00:56:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:33,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:34,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:34,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865340804] [2021-11-21 00:56:34,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865340804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:34,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:34,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:34,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926997871] [2021-11-21 00:56:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:34,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:34,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:34,066 INFO L87 Difference]: Start difference. First operand 880 states and 2547 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:34,378 INFO L93 Difference]: Finished difference Result 938 states and 2653 transitions. [2021-11-21 00:56:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:56:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:34,381 INFO L225 Difference]: With dead ends: 938 [2021-11-21 00:56:34,381 INFO L226 Difference]: Without dead ends: 914 [2021-11-21 00:56:34,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:34,382 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:34,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-21 00:56:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 875. [2021-11-21 00:56:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.90045766590389) internal successors, (2535), 874 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2535 transitions. [2021-11-21 00:56:34,394 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2535 transitions. Word has length 36 [2021-11-21 00:56:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:34,394 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2535 transitions. [2021-11-21 00:56:34,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2535 transitions. [2021-11-21 00:56:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:34,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:34,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:34,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-21 00:56:34,396 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1424059288, now seen corresponding path program 15 times [2021-11-21 00:56:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:34,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566852955] [2021-11-21 00:56:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:34,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:34,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:34,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566852955] [2021-11-21 00:56:34,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566852955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:34,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:34,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669741197] [2021-11-21 00:56:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:34,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:34,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:34,753 INFO L87 Difference]: Start difference. First operand 875 states and 2535 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:35,081 INFO L93 Difference]: Finished difference Result 911 states and 2607 transitions. [2021-11-21 00:56:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:56:35,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:35,082 INFO L225 Difference]: With dead ends: 911 [2021-11-21 00:56:35,082 INFO L226 Difference]: Without dead ends: 896 [2021-11-21 00:56:35,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:35,083 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:35,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-11-21 00:56:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 877. [2021-11-21 00:56:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 2.8972602739726026) internal successors, (2538), 876 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2538 transitions. [2021-11-21 00:56:35,094 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2538 transitions. Word has length 36 [2021-11-21 00:56:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:35,095 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 2538 transitions. [2021-11-21 00:56:35,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2538 transitions. [2021-11-21 00:56:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:35,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:35,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:35,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-21 00:56:35,097 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1920457994, now seen corresponding path program 16 times [2021-11-21 00:56:35,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:35,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613067156] [2021-11-21 00:56:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:35,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:35,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613067156] [2021-11-21 00:56:35,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613067156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:35,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:35,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:35,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732970004] [2021-11-21 00:56:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:35,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:35,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:35,519 INFO L87 Difference]: Start difference. First operand 877 states and 2538 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:35,765 INFO L93 Difference]: Finished difference Result 905 states and 2592 transitions. [2021-11-21 00:56:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:56:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:35,767 INFO L225 Difference]: With dead ends: 905 [2021-11-21 00:56:35,767 INFO L226 Difference]: Without dead ends: 892 [2021-11-21 00:56:35,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:35,767 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:35,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-21 00:56:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 875. [2021-11-21 00:56:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.898169336384439) internal successors, (2533), 874 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2533 transitions. [2021-11-21 00:56:35,779 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2533 transitions. Word has length 36 [2021-11-21 00:56:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:35,779 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2533 transitions. [2021-11-21 00:56:35,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2533 transitions. [2021-11-21 00:56:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:35,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:35,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:35,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-21 00:56:35,781 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash 347391146, now seen corresponding path program 17 times [2021-11-21 00:56:35,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:35,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335215146] [2021-11-21 00:56:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:35,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:36,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335215146] [2021-11-21 00:56:36,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335215146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:36,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:36,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:36,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430781721] [2021-11-21 00:56:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:36,051 INFO L87 Difference]: Start difference. First operand 875 states and 2533 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:36,318 INFO L93 Difference]: Finished difference Result 921 states and 2611 transitions. [2021-11-21 00:56:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:56:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:36,320 INFO L225 Difference]: With dead ends: 921 [2021-11-21 00:56:36,320 INFO L226 Difference]: Without dead ends: 907 [2021-11-21 00:56:36,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:36,321 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:36,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-21 00:56:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 878. [2021-11-21 00:56:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 2.8928164196123145) internal successors, (2537), 877 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2537 transitions. [2021-11-21 00:56:36,332 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2537 transitions. Word has length 36 [2021-11-21 00:56:36,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:36,333 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 2537 transitions. [2021-11-21 00:56:36,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2537 transitions. [2021-11-21 00:56:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:36,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:36,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-21 00:56:36,335 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash -660144884, now seen corresponding path program 18 times [2021-11-21 00:56:36,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:36,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038539316] [2021-11-21 00:56:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:36,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:36,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:36,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038539316] [2021-11-21 00:56:36,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038539316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:36,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:36,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:36,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661384132] [2021-11-21 00:56:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:36,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:36,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:36,696 INFO L87 Difference]: Start difference. First operand 878 states and 2537 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:36,967 INFO L93 Difference]: Finished difference Result 905 states and 2588 transitions. [2021-11-21 00:56:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:56:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:36,968 INFO L225 Difference]: With dead ends: 905 [2021-11-21 00:56:36,968 INFO L226 Difference]: Without dead ends: 875 [2021-11-21 00:56:36,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:36,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:36,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-21 00:56:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 851. [2021-11-21 00:56:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.8894117647058826) internal successors, (2456), 850 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2456 transitions. [2021-11-21 00:56:36,981 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2456 transitions. Word has length 36 [2021-11-21 00:56:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:36,981 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 2456 transitions. [2021-11-21 00:56:36,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2456 transitions. [2021-11-21 00:56:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:36,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:36,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:36,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-21 00:56:36,983 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:36,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1273544530, now seen corresponding path program 19 times [2021-11-21 00:56:36,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:36,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33219630] [2021-11-21 00:56:36,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:36,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:37,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:37,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33219630] [2021-11-21 00:56:37,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33219630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:37,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:37,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:37,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409440363] [2021-11-21 00:56:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:37,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:37,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:37,207 INFO L87 Difference]: Start difference. First operand 851 states and 2456 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:37,495 INFO L93 Difference]: Finished difference Result 931 states and 2673 transitions. [2021-11-21 00:56:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:56:37,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:37,497 INFO L225 Difference]: With dead ends: 931 [2021-11-21 00:56:37,497 INFO L226 Difference]: Without dead ends: 920 [2021-11-21 00:56:37,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:37,497 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:37,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-21 00:56:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 885. [2021-11-21 00:56:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 2.9027149321266967) internal successors, (2566), 884 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 2566 transitions. [2021-11-21 00:56:37,509 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 2566 transitions. Word has length 36 [2021-11-21 00:56:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:37,509 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 2566 transitions. [2021-11-21 00:56:37,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 2566 transitions. [2021-11-21 00:56:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:37,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:37,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:37,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-21 00:56:37,511 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:37,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1275328468, now seen corresponding path program 20 times [2021-11-21 00:56:37,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:37,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220819899] [2021-11-21 00:56:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:37,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:37,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:37,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220819899] [2021-11-21 00:56:37,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220819899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:37,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:37,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:37,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726373856] [2021-11-21 00:56:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:37,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:37,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:37,681 INFO L87 Difference]: Start difference. First operand 885 states and 2566 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:37,938 INFO L93 Difference]: Finished difference Result 943 states and 2682 transitions. [2021-11-21 00:56:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:56:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:37,940 INFO L225 Difference]: With dead ends: 943 [2021-11-21 00:56:37,940 INFO L226 Difference]: Without dead ends: 924 [2021-11-21 00:56:37,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:37,941 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:37,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-11-21 00:56:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 880. [2021-11-21 00:56:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.905574516496018) internal successors, (2554), 879 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2554 transitions. [2021-11-21 00:56:37,962 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2554 transitions. Word has length 36 [2021-11-21 00:56:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:37,962 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2554 transitions. [2021-11-21 00:56:37,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2554 transitions. [2021-11-21 00:56:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:37,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:37,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:37,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-21 00:56:37,965 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash 104698672, now seen corresponding path program 21 times [2021-11-21 00:56:37,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:37,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391530287] [2021-11-21 00:56:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:37,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:38,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:38,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391530287] [2021-11-21 00:56:38,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391530287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:38,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:38,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:38,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724676361] [2021-11-21 00:56:38,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:38,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:38,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:38,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:38,288 INFO L87 Difference]: Start difference. First operand 880 states and 2554 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:38,517 INFO L93 Difference]: Finished difference Result 923 states and 2650 transitions. [2021-11-21 00:56:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:56:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:38,518 INFO L225 Difference]: With dead ends: 923 [2021-11-21 00:56:38,519 INFO L226 Difference]: Without dead ends: 912 [2021-11-21 00:56:38,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:38,519 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:38,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-11-21 00:56:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 882. [2021-11-21 00:56:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.902383654937571) internal successors, (2557), 881 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2557 transitions. [2021-11-21 00:56:38,532 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2557 transitions. Word has length 36 [2021-11-21 00:56:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:38,532 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2557 transitions. [2021-11-21 00:56:38,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2557 transitions. [2021-11-21 00:56:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:38,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:38,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:38,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-21 00:56:38,534 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash -845751342, now seen corresponding path program 22 times [2021-11-21 00:56:38,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:38,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364444792] [2021-11-21 00:56:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:38,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:38,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:38,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364444792] [2021-11-21 00:56:38,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364444792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:38,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:38,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:38,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19974861] [2021-11-21 00:56:38,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:38,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:38,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:38,764 INFO L87 Difference]: Start difference. First operand 882 states and 2557 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:38,991 INFO L93 Difference]: Finished difference Result 923 states and 2645 transitions. [2021-11-21 00:56:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:56:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:38,993 INFO L225 Difference]: With dead ends: 923 [2021-11-21 00:56:38,993 INFO L226 Difference]: Without dead ends: 908 [2021-11-21 00:56:38,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:38,994 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:38,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-21 00:56:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 880. [2021-11-21 00:56:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.9032992036405005) internal successors, (2552), 879 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2552 transitions. [2021-11-21 00:56:39,009 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2552 transitions. Word has length 36 [2021-11-21 00:56:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:39,010 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2552 transitions. [2021-11-21 00:56:39,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2552 transitions. [2021-11-21 00:56:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:39,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:39,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:39,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-21 00:56:39,011 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1876149106, now seen corresponding path program 23 times [2021-11-21 00:56:39,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:39,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070179450] [2021-11-21 00:56:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:39,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:39,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:39,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070179450] [2021-11-21 00:56:39,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070179450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:39,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:39,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:39,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908954300] [2021-11-21 00:56:39,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:39,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:39,419 INFO L87 Difference]: Start difference. First operand 880 states and 2552 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:39,725 INFO L93 Difference]: Finished difference Result 942 states and 2671 transitions. [2021-11-21 00:56:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:56:39,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:39,727 INFO L225 Difference]: With dead ends: 942 [2021-11-21 00:56:39,727 INFO L226 Difference]: Without dead ends: 928 [2021-11-21 00:56:39,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:39,728 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:39,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:56:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-21 00:56:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 883. [2021-11-21 00:56:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.8979591836734695) internal successors, (2556), 882 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2556 transitions. [2021-11-21 00:56:39,740 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2556 transitions. Word has length 36 [2021-11-21 00:56:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:39,740 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 2556 transitions. [2021-11-21 00:56:39,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2556 transitions. [2021-11-21 00:56:39,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:39,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:39,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:39,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-21 00:56:39,742 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:39,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash 868613076, now seen corresponding path program 24 times [2021-11-21 00:56:39,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:39,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058365645] [2021-11-21 00:56:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:39,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:40,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:40,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058365645] [2021-11-21 00:56:40,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058365645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:40,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:40,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:40,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781315971] [2021-11-21 00:56:40,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:40,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:40,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:40,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:40,018 INFO L87 Difference]: Start difference. First operand 883 states and 2556 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:40,374 INFO L93 Difference]: Finished difference Result 928 states and 2648 transitions. [2021-11-21 00:56:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:56:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:40,376 INFO L225 Difference]: With dead ends: 928 [2021-11-21 00:56:40,376 INFO L226 Difference]: Without dead ends: 905 [2021-11-21 00:56:40,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:56:40,377 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:40,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-21 00:56:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 876. [2021-11-21 00:56:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.9005714285714284) internal successors, (2538), 875 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2538 transitions. [2021-11-21 00:56:40,389 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2538 transitions. Word has length 36 [2021-11-21 00:56:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:40,389 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2538 transitions. [2021-11-21 00:56:40,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2538 transitions. [2021-11-21 00:56:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:40,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:40,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:40,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-21 00:56:40,391 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash -704576566, now seen corresponding path program 25 times [2021-11-21 00:56:40,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:40,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895795730] [2021-11-21 00:56:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:40,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:40,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:40,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895795730] [2021-11-21 00:56:40,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895795730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:40,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:40,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:40,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350173422] [2021-11-21 00:56:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:40,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:40,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:40,687 INFO L87 Difference]: Start difference. First operand 876 states and 2538 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:41,078 INFO L93 Difference]: Finished difference Result 1039 states and 2897 transitions. [2021-11-21 00:56:41,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:41,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:41,080 INFO L225 Difference]: With dead ends: 1039 [2021-11-21 00:56:41,080 INFO L226 Difference]: Without dead ends: 1028 [2021-11-21 00:56:41,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:41,081 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:41,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-21 00:56:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 926. [2021-11-21 00:56:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.8908108108108106) internal successors, (2674), 925 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2674 transitions. [2021-11-21 00:56:41,093 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2674 transitions. Word has length 36 [2021-11-21 00:56:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:41,093 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 2674 transitions. [2021-11-21 00:56:41,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2674 transitions. [2021-11-21 00:56:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:41,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:41,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:41,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-21 00:56:41,095 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:41,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash -702792628, now seen corresponding path program 26 times [2021-11-21 00:56:41,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:41,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941336242] [2021-11-21 00:56:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:41,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:41,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:41,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941336242] [2021-11-21 00:56:41,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941336242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:41,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:41,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:41,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944854429] [2021-11-21 00:56:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:41,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:41,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:41,395 INFO L87 Difference]: Start difference. First operand 926 states and 2674 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:41,726 INFO L93 Difference]: Finished difference Result 1051 states and 2906 transitions. [2021-11-21 00:56:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:41,728 INFO L225 Difference]: With dead ends: 1051 [2021-11-21 00:56:41,728 INFO L226 Difference]: Without dead ends: 1032 [2021-11-21 00:56:41,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:41,729 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:41,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-21 00:56:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 921. [2021-11-21 00:56:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 2.885869565217391) internal successors, (2655), 920 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2655 transitions. [2021-11-21 00:56:41,750 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2655 transitions. Word has length 36 [2021-11-21 00:56:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:41,750 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 2655 transitions. [2021-11-21 00:56:41,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2655 transitions. [2021-11-21 00:56:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:41,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:41,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:41,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-21 00:56:41,753 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:41,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash -191531900, now seen corresponding path program 27 times [2021-11-21 00:56:41,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:41,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838664308] [2021-11-21 00:56:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:41,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:42,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:42,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838664308] [2021-11-21 00:56:42,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838664308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:42,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:42,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:42,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63842617] [2021-11-21 00:56:42,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:42,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:42,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:42,078 INFO L87 Difference]: Start difference. First operand 921 states and 2655 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:42,551 INFO L93 Difference]: Finished difference Result 1089 states and 2971 transitions. [2021-11-21 00:56:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:42,553 INFO L225 Difference]: With dead ends: 1089 [2021-11-21 00:56:42,553 INFO L226 Difference]: Without dead ends: 1042 [2021-11-21 00:56:42,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:56:42,553 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:42,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-11-21 00:56:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 886. [2021-11-21 00:56:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 2.8836158192090395) internal successors, (2552), 885 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2552 transitions. [2021-11-21 00:56:42,566 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2552 transitions. Word has length 36 [2021-11-21 00:56:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:42,566 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2552 transitions. [2021-11-21 00:56:42,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2552 transitions. [2021-11-21 00:56:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:42,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:42,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:42,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-21 00:56:42,568 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1353711044, now seen corresponding path program 28 times [2021-11-21 00:56:42,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:42,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286155019] [2021-11-21 00:56:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:42,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:43,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:43,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286155019] [2021-11-21 00:56:43,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286155019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:43,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:43,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:43,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786766398] [2021-11-21 00:56:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:43,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:43,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:43,016 INFO L87 Difference]: Start difference. First operand 886 states and 2552 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:43,321 INFO L93 Difference]: Finished difference Result 926 states and 2639 transitions. [2021-11-21 00:56:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:43,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:43,323 INFO L225 Difference]: With dead ends: 926 [2021-11-21 00:56:43,323 INFO L226 Difference]: Without dead ends: 915 [2021-11-21 00:56:43,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:56:43,324 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:43,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-11-21 00:56:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 900. [2021-11-21 00:56:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.8798665183537264) internal successors, (2589), 899 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2589 transitions. [2021-11-21 00:56:43,335 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2589 transitions. Word has length 36 [2021-11-21 00:56:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:43,335 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2589 transitions. [2021-11-21 00:56:43,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2589 transitions. [2021-11-21 00:56:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:43,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:43,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:43,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-21 00:56:43,337 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash 403261030, now seen corresponding path program 29 times [2021-11-21 00:56:43,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:43,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584416037] [2021-11-21 00:56:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:43,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:43,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:43,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584416037] [2021-11-21 00:56:43,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584416037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:43,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:43,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:43,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649023127] [2021-11-21 00:56:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:43,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:43,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:43,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:43,841 INFO L87 Difference]: Start difference. First operand 900 states and 2589 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:44,164 INFO L93 Difference]: Finished difference Result 924 states and 2633 transitions. [2021-11-21 00:56:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:44,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:44,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:44,166 INFO L225 Difference]: With dead ends: 924 [2021-11-21 00:56:44,166 INFO L226 Difference]: Without dead ends: 913 [2021-11-21 00:56:44,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:44,166 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:44,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:44,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-11-21 00:56:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 898. [2021-11-21 00:56:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 2.878483835005574) internal successors, (2582), 897 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 2582 transitions. [2021-11-21 00:56:44,178 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 2582 transitions. Word has length 36 [2021-11-21 00:56:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:44,178 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 2582 transitions. [2021-11-21 00:56:44,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 2582 transitions. [2021-11-21 00:56:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:44,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:44,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:44,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-21 00:56:44,180 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -926856628, now seen corresponding path program 30 times [2021-11-21 00:56:44,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:44,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487487806] [2021-11-21 00:56:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:44,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:44,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:44,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487487806] [2021-11-21 00:56:44,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487487806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:44,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:44,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:56:44,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068845769] [2021-11-21 00:56:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:44,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:56:44,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:56:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:56:44,550 INFO L87 Difference]: Start difference. First operand 898 states and 2582 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:44,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:44,954 INFO L93 Difference]: Finished difference Result 972 states and 2715 transitions. [2021-11-21 00:56:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:56:44,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:44,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:44,955 INFO L225 Difference]: With dead ends: 972 [2021-11-21 00:56:44,956 INFO L226 Difference]: Without dead ends: 904 [2021-11-21 00:56:44,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:56:44,956 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:44,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:56:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-21 00:56:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 820. [2021-11-21 00:56:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.884004884004884) internal successors, (2362), 819 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2362 transitions. [2021-11-21 00:56:44,980 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2362 transitions. Word has length 36 [2021-11-21 00:56:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:44,981 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2362 transitions. [2021-11-21 00:56:44,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2362 transitions. [2021-11-21 00:56:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:44,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:44,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:44,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-21 00:56:44,983 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash -798539952, now seen corresponding path program 31 times [2021-11-21 00:56:44,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:44,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510932465] [2021-11-21 00:56:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:44,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:45,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:45,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510932465] [2021-11-21 00:56:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510932465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:45,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 00:56:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97617551] [2021-11-21 00:56:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:45,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:56:45,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:56:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:56:45,306 INFO L87 Difference]: Start difference. First operand 820 states and 2362 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:46,138 INFO L93 Difference]: Finished difference Result 1713 states and 4792 transitions. [2021-11-21 00:56:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:46,141 INFO L225 Difference]: With dead ends: 1713 [2021-11-21 00:56:46,141 INFO L226 Difference]: Without dead ends: 1706 [2021-11-21 00:56:46,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:56:46,144 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 210 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:46,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 0 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:46,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-21 00:56:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 834. [2021-11-21 00:56:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 2.8907563025210083) internal successors, (2408), 833 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-21 00:56:46,163 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-21 00:56:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:46,163 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-21 00:56:46,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-21 00:56:46,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:46,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:46,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:46,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-21 00:56:46,165 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:46,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1294311498, now seen corresponding path program 32 times [2021-11-21 00:56:46,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:46,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585691236] [2021-11-21 00:56:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:46,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:46,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585691236] [2021-11-21 00:56:46,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585691236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:46,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:46,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:46,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263134193] [2021-11-21 00:56:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:46,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:46,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:46,514 INFO L87 Difference]: Start difference. First operand 834 states and 2408 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:47,052 INFO L93 Difference]: Finished difference Result 1741 states and 4864 transitions. [2021-11-21 00:56:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:47,055 INFO L225 Difference]: With dead ends: 1741 [2021-11-21 00:56:47,055 INFO L226 Difference]: Without dead ends: 1734 [2021-11-21 00:56:47,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:47,056 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:47,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-11-21 00:56:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 849. [2021-11-21 00:56:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.891509433962264) internal successors, (2452), 848 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2452 transitions. [2021-11-21 00:56:47,077 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2452 transitions. Word has length 36 [2021-11-21 00:56:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:47,077 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2452 transitions. [2021-11-21 00:56:47,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2452 transitions. [2021-11-21 00:56:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:47,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:47,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:47,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-21 00:56:47,080 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:47,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1703732872, now seen corresponding path program 33 times [2021-11-21 00:56:47,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:47,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386988298] [2021-11-21 00:56:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:47,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:47,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:47,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386988298] [2021-11-21 00:56:47,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386988298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:47,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:47,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:47,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97806270] [2021-11-21 00:56:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:47,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:47,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:47,386 INFO L87 Difference]: Start difference. First operand 849 states and 2452 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:47,945 INFO L93 Difference]: Finished difference Result 1733 states and 4845 transitions. [2021-11-21 00:56:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:47,945 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:47,948 INFO L225 Difference]: With dead ends: 1733 [2021-11-21 00:56:47,948 INFO L226 Difference]: Without dead ends: 1719 [2021-11-21 00:56:47,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:47,948 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 171 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:47,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-21 00:56:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 834. [2021-11-21 00:56:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 2.8907563025210083) internal successors, (2408), 833 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-21 00:56:47,964 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-21 00:56:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:47,965 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-21 00:56:47,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-21 00:56:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:47,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:47,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:47,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-21 00:56:47,967 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:47,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1854266196, now seen corresponding path program 34 times [2021-11-21 00:56:47,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:47,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802870327] [2021-11-21 00:56:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:47,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:48,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802870327] [2021-11-21 00:56:48,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802870327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:48,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:48,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:48,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240580028] [2021-11-21 00:56:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:48,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:48,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:48,365 INFO L87 Difference]: Start difference. First operand 834 states and 2408 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:49,035 INFO L93 Difference]: Finished difference Result 1841 states and 5109 transitions. [2021-11-21 00:56:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:49,042 INFO L225 Difference]: With dead ends: 1841 [2021-11-21 00:56:49,042 INFO L226 Difference]: Without dead ends: 1834 [2021-11-21 00:56:49,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:49,043 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:49,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-21 00:56:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 840. [2021-11-21 00:56:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 2.890345649582837) internal successors, (2425), 839 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2425 transitions. [2021-11-21 00:56:49,081 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2425 transitions. Word has length 36 [2021-11-21 00:56:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:49,081 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 2425 transitions. [2021-11-21 00:56:49,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2425 transitions. [2021-11-21 00:56:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:49,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:49,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:49,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-21 00:56:49,083 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 609678224, now seen corresponding path program 35 times [2021-11-21 00:56:49,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265831781] [2021-11-21 00:56:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:49,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:49,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:49,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265831781] [2021-11-21 00:56:49,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265831781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:49,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:49,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:49,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178152331] [2021-11-21 00:56:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:49,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:49,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:49,378 INFO L87 Difference]: Start difference. First operand 840 states and 2425 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:50,027 INFO L93 Difference]: Finished difference Result 1881 states and 5208 transitions. [2021-11-21 00:56:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:50,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:50,030 INFO L225 Difference]: With dead ends: 1881 [2021-11-21 00:56:50,030 INFO L226 Difference]: Without dead ends: 1874 [2021-11-21 00:56:50,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:50,031 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:50,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:56:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-11-21 00:56:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 858. [2021-11-21 00:56:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 2.896149358226371) internal successors, (2482), 857 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2482 transitions. [2021-11-21 00:56:50,047 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2482 transitions. Word has length 36 [2021-11-21 00:56:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:50,047 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 2482 transitions. [2021-11-21 00:56:50,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2482 transitions. [2021-11-21 00:56:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:50,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:50,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:50,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-21 00:56:50,049 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:50,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2047172780, now seen corresponding path program 36 times [2021-11-21 00:56:50,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:50,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784259550] [2021-11-21 00:56:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:50,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:50,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784259550] [2021-11-21 00:56:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784259550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:50,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:50,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:50,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213971514] [2021-11-21 00:56:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:50,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:50,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:50,341 INFO L87 Difference]: Start difference. First operand 858 states and 2482 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:50,977 INFO L93 Difference]: Finished difference Result 1865 states and 5176 transitions. [2021-11-21 00:56:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:50,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:50,980 INFO L225 Difference]: With dead ends: 1865 [2021-11-21 00:56:50,980 INFO L226 Difference]: Without dead ends: 1858 [2021-11-21 00:56:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:50,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:50,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-11-21 00:56:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 834. [2021-11-21 00:56:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 2.8907563025210083) internal successors, (2408), 833 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-21 00:56:51,000 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-21 00:56:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:51,000 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-21 00:56:51,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-21 00:56:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:51,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:51,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:51,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-21 00:56:51,003 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:51,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash 367177190, now seen corresponding path program 37 times [2021-11-21 00:56:51,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:51,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144260103] [2021-11-21 00:56:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:51,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:51,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:51,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144260103] [2021-11-21 00:56:51,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144260103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:51,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:51,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:56:51,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14406494] [2021-11-21 00:56:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:51,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:56:51,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:51,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:56:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:56:51,359 INFO L87 Difference]: Start difference. First operand 834 states and 2408 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:52,929 INFO L93 Difference]: Finished difference Result 1997 states and 5496 transitions. [2021-11-21 00:56:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:56:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:52,933 INFO L225 Difference]: With dead ends: 1997 [2021-11-21 00:56:52,933 INFO L226 Difference]: Without dead ends: 1990 [2021-11-21 00:56:52,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2021-11-21 00:56:52,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 298 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:52,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 0 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:56:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-11-21 00:56:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 850. [2021-11-21 00:56:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 2.8975265017667846) internal successors, (2460), 849 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2460 transitions. [2021-11-21 00:56:52,963 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2460 transitions. Word has length 36 [2021-11-21 00:56:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:52,963 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2460 transitions. [2021-11-21 00:56:52,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2460 transitions. [2021-11-21 00:56:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:52,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:52,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:52,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-21 00:56:52,966 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1664100116, now seen corresponding path program 38 times [2021-11-21 00:56:52,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:52,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019301567] [2021-11-21 00:56:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:52,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:53,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:53,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019301567] [2021-11-21 00:56:53,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019301567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:53,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:53,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:53,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732921280] [2021-11-21 00:56:53,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:53,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:53,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:53,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:53,279 INFO L87 Difference]: Start difference. First operand 850 states and 2460 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:53,895 INFO L93 Difference]: Finished difference Result 1979 states and 5530 transitions. [2021-11-21 00:56:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:53,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:53,898 INFO L225 Difference]: With dead ends: 1979 [2021-11-21 00:56:53,898 INFO L226 Difference]: Without dead ends: 1965 [2021-11-21 00:56:53,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:53,899 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:53,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-11-21 00:56:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 892. [2021-11-21 00:56:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 2.925925925925926) internal successors, (2607), 891 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2607 transitions. [2021-11-21 00:56:53,916 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2607 transitions. Word has length 36 [2021-11-21 00:56:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:53,917 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2607 transitions. [2021-11-21 00:56:53,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2607 transitions. [2021-11-21 00:56:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:53,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:53,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:53,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-21 00:56:53,918 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 802252356, now seen corresponding path program 39 times [2021-11-21 00:56:53,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:53,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134629503] [2021-11-21 00:56:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:53,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:54,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:54,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134629503] [2021-11-21 00:56:54,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134629503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:54,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:54,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:54,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712628967] [2021-11-21 00:56:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:54,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:54,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:54,163 INFO L87 Difference]: Start difference. First operand 892 states and 2607 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:54,837 INFO L93 Difference]: Finished difference Result 1999 states and 5565 transitions. [2021-11-21 00:56:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:54,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:54,841 INFO L225 Difference]: With dead ends: 1999 [2021-11-21 00:56:54,841 INFO L226 Difference]: Without dead ends: 1992 [2021-11-21 00:56:54,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:54,845 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:54,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-11-21 00:56:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 861. [2021-11-21 00:56:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 2.925581395348837) internal successors, (2516), 860 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 2516 transitions. [2021-11-21 00:56:54,877 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 2516 transitions. Word has length 36 [2021-11-21 00:56:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:54,877 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 2516 transitions. [2021-11-21 00:56:54,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 2516 transitions. [2021-11-21 00:56:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:54,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:54,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:54,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-21 00:56:54,880 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1887558118, now seen corresponding path program 40 times [2021-11-21 00:56:54,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:54,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559125280] [2021-11-21 00:56:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:54,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:55,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:55,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559125280] [2021-11-21 00:56:55,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559125280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:55,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:55,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:56:55,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883858613] [2021-11-21 00:56:55,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:55,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:56:55,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:56:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:56:55,215 INFO L87 Difference]: Start difference. First operand 861 states and 2516 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:55,789 INFO L93 Difference]: Finished difference Result 1983 states and 5524 transitions. [2021-11-21 00:56:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:56:55,789 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:55,792 INFO L225 Difference]: With dead ends: 1983 [2021-11-21 00:56:55,792 INFO L226 Difference]: Without dead ends: 1976 [2021-11-21 00:56:55,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:56:55,793 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 266 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:55,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 0 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:56:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-11-21 00:56:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 879. [2021-11-21 00:56:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.930523917995444) internal successors, (2573), 878 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 2573 transitions. [2021-11-21 00:56:55,809 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 2573 transitions. Word has length 36 [2021-11-21 00:56:55,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:55,809 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 2573 transitions. [2021-11-21 00:56:55,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 2573 transitions. [2021-11-21 00:56:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:55,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:55,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:55,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-21 00:56:55,811 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1062245594, now seen corresponding path program 41 times [2021-11-21 00:56:55,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:55,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419501245] [2021-11-21 00:56:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:55,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:56,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:56,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419501245] [2021-11-21 00:56:56,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419501245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:56,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:56,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:56:56,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812092163] [2021-11-21 00:56:56,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:56,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:56:56,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:56:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:56:56,250 INFO L87 Difference]: Start difference. First operand 879 states and 2573 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:59,352 INFO L93 Difference]: Finished difference Result 2361 states and 6634 transitions. [2021-11-21 00:56:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:56:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:56:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:59,356 INFO L225 Difference]: With dead ends: 2361 [2021-11-21 00:56:59,356 INFO L226 Difference]: Without dead ends: 2354 [2021-11-21 00:56:59,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 00:56:59,356 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 285 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:59,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 0 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:56:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-11-21 00:56:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 888. [2021-11-21 00:56:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 2.9481397970687713) internal successors, (2615), 887 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 2615 transitions. [2021-11-21 00:56:59,377 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 2615 transitions. Word has length 36 [2021-11-21 00:56:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:59,378 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 2615 transitions. [2021-11-21 00:56:59,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 2615 transitions. [2021-11-21 00:56:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:56:59,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:59,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:59,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-21 00:56:59,380 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1018208904, now seen corresponding path program 42 times [2021-11-21 00:56:59,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025572578] [2021-11-21 00:56:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:59,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:56:59,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:59,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025572578] [2021-11-21 00:56:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025572578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:56:59,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:56:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:56:59,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52809433] [2021-11-21 00:56:59,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:56:59,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:56:59,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:56:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:56:59,723 INFO L87 Difference]: Start difference. First operand 888 states and 2615 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:00,385 INFO L93 Difference]: Finished difference Result 1942 states and 5467 transitions. [2021-11-21 00:57:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:57:00,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:00,389 INFO L225 Difference]: With dead ends: 1942 [2021-11-21 00:57:00,389 INFO L226 Difference]: Without dead ends: 1928 [2021-11-21 00:57:00,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:57:00,390 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:00,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-11-21 00:57:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 897. [2021-11-21 00:57:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 2.9419642857142856) internal successors, (2636), 896 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 2636 transitions. [2021-11-21 00:57:00,408 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 2636 transitions. Word has length 36 [2021-11-21 00:57:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:00,409 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 2636 transitions. [2021-11-21 00:57:00,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 2636 transitions. [2021-11-21 00:57:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:00,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:00,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:00,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-21 00:57:00,410 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash -259829548, now seen corresponding path program 43 times [2021-11-21 00:57:00,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:00,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6198311] [2021-11-21 00:57:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:00,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:00,771 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:00,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6198311] [2021-11-21 00:57:00,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6198311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:00,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:00,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:00,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050916671] [2021-11-21 00:57:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:00,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:00,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:00,772 INFO L87 Difference]: Start difference. First operand 897 states and 2636 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:01,437 INFO L93 Difference]: Finished difference Result 1942 states and 5465 transitions. [2021-11-21 00:57:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:01,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:01,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:01,440 INFO L225 Difference]: With dead ends: 1942 [2021-11-21 00:57:01,441 INFO L226 Difference]: Without dead ends: 1935 [2021-11-21 00:57:01,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:01,441 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 164 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:01,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 0 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:01,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2021-11-21 00:57:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 879. [2021-11-21 00:57:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.930523917995444) internal successors, (2573), 878 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 2573 transitions. [2021-11-21 00:57:01,459 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 2573 transitions. Word has length 36 [2021-11-21 00:57:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:01,459 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 2573 transitions. [2021-11-21 00:57:01,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 2573 transitions. [2021-11-21 00:57:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:01,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:01,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:01,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-21 00:57:01,460 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1188577598, now seen corresponding path program 44 times [2021-11-21 00:57:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298268534] [2021-11-21 00:57:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:01,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:01,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:01,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298268534] [2021-11-21 00:57:01,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298268534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:01,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:01,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:01,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811611248] [2021-11-21 00:57:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:01,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:01,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:01,799 INFO L87 Difference]: Start difference. First operand 879 states and 2573 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:02,473 INFO L93 Difference]: Finished difference Result 1992 states and 5569 transitions. [2021-11-21 00:57:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:02,476 INFO L225 Difference]: With dead ends: 1992 [2021-11-21 00:57:02,476 INFO L226 Difference]: Without dead ends: 1985 [2021-11-21 00:57:02,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:02,476 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 204 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:02,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 0 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-11-21 00:57:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 834. [2021-11-21 00:57:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 2.8907563025210083) internal successors, (2408), 833 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-21 00:57:02,505 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-21 00:57:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:02,506 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-21 00:57:02,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-21 00:57:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:02,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:02,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:02,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-21 00:57:02,507 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -718222162, now seen corresponding path program 45 times [2021-11-21 00:57:02,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:02,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428850344] [2021-11-21 00:57:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:02,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:03,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428850344] [2021-11-21 00:57:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428850344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:03,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:03,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:03,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496865045] [2021-11-21 00:57:03,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:03,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:03,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:03,160 INFO L87 Difference]: Start difference. First operand 834 states and 2408 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:05,318 INFO L93 Difference]: Finished difference Result 1325 states and 3482 transitions. [2021-11-21 00:57:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:57:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:05,320 INFO L225 Difference]: With dead ends: 1325 [2021-11-21 00:57:05,321 INFO L226 Difference]: Without dead ends: 1318 [2021-11-21 00:57:05,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:57:05,321 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:05,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:57:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-21 00:57:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 844. [2021-11-21 00:57:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.888493475682088) internal successors, (2435), 843 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2435 transitions. [2021-11-21 00:57:05,334 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2435 transitions. Word has length 36 [2021-11-21 00:57:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:05,334 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2435 transitions. [2021-11-21 00:57:05,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2435 transitions. [2021-11-21 00:57:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:05,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:05,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:05,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-21 00:57:05,336 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1448989820, now seen corresponding path program 46 times [2021-11-21 00:57:05,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:05,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650907552] [2021-11-21 00:57:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:05,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:05,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:05,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650907552] [2021-11-21 00:57:05,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650907552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:05,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:05,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:05,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908363428] [2021-11-21 00:57:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:05,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:05,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:05,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:05,846 INFO L87 Difference]: Start difference. First operand 844 states and 2435 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:06,684 INFO L93 Difference]: Finished difference Result 1351 states and 3542 transitions. [2021-11-21 00:57:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:06,687 INFO L225 Difference]: With dead ends: 1351 [2021-11-21 00:57:06,687 INFO L226 Difference]: Without dead ends: 1344 [2021-11-21 00:57:06,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:06,687 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 210 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:06,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 0 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-21 00:57:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 862. [2021-11-21 00:57:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.894308943089431) internal successors, (2492), 861 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2492 transitions. [2021-11-21 00:57:06,702 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2492 transitions. Word has length 36 [2021-11-21 00:57:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:06,702 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2492 transitions. [2021-11-21 00:57:06,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2492 transitions. [2021-11-21 00:57:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:06,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:06,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:06,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-21 00:57:06,703 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1916934718, now seen corresponding path program 47 times [2021-11-21 00:57:06,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:06,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527628298] [2021-11-21 00:57:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:06,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:07,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:07,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527628298] [2021-11-21 00:57:07,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527628298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:07,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:07,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:07,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845109881] [2021-11-21 00:57:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:07,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:07,336 INFO L87 Difference]: Start difference. First operand 862 states and 2492 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:08,352 INFO L93 Difference]: Finished difference Result 1343 states and 3528 transitions. [2021-11-21 00:57:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:08,354 INFO L225 Difference]: With dead ends: 1343 [2021-11-21 00:57:08,354 INFO L226 Difference]: Without dead ends: 1336 [2021-11-21 00:57:08,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:08,355 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 172 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:08,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 0 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:57:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-21 00:57:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 838. [2021-11-21 00:57:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.888888888888889) internal successors, (2418), 837 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2418 transitions. [2021-11-21 00:57:08,375 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2418 transitions. Word has length 36 [2021-11-21 00:57:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:08,375 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2418 transitions. [2021-11-21 00:57:08,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2418 transitions. [2021-11-21 00:57:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:08,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:08,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:08,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-21 00:57:08,377 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:08,378 INFO L85 PathProgramCache]: Analyzing trace with hash -677429498, now seen corresponding path program 48 times [2021-11-21 00:57:08,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:08,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140049710] [2021-11-21 00:57:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:08,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:08,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:08,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140049710] [2021-11-21 00:57:08,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140049710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:08,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:08,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:08,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593742299] [2021-11-21 00:57:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:08,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:08,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:08,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:08,932 INFO L87 Difference]: Start difference. First operand 838 states and 2418 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:09,957 INFO L93 Difference]: Finished difference Result 1237 states and 3305 transitions. [2021-11-21 00:57:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:09,957 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:09,959 INFO L225 Difference]: With dead ends: 1237 [2021-11-21 00:57:09,959 INFO L226 Difference]: Without dead ends: 1230 [2021-11-21 00:57:09,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:09,959 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:09,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-21 00:57:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 844. [2021-11-21 00:57:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.888493475682088) internal successors, (2435), 843 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2435 transitions. [2021-11-21 00:57:09,971 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2435 transitions. Word has length 36 [2021-11-21 00:57:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:09,972 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2435 transitions. [2021-11-21 00:57:09,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2435 transitions. [2021-11-21 00:57:09,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:09,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:09,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:09,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-21 00:57:09,973 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1786514922, now seen corresponding path program 49 times [2021-11-21 00:57:09,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:09,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151572625] [2021-11-21 00:57:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:09,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:10,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:10,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151572625] [2021-11-21 00:57:10,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151572625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:10,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:10,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:10,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287322393] [2021-11-21 00:57:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:10,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:10,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:10,843 INFO L87 Difference]: Start difference. First operand 844 states and 2435 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:15,524 INFO L93 Difference]: Finished difference Result 1419 states and 3741 transitions. [2021-11-21 00:57:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:57:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:15,526 INFO L225 Difference]: With dead ends: 1419 [2021-11-21 00:57:15,526 INFO L226 Difference]: Without dead ends: 1412 [2021-11-21 00:57:15,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 00:57:15,527 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 282 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:15,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 0 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:57:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-11-21 00:57:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 848. [2021-11-21 00:57:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.8913813459268005) internal successors, (2449), 847 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2449 transitions. [2021-11-21 00:57:15,548 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2449 transitions. Word has length 36 [2021-11-21 00:57:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:15,549 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 2449 transitions. [2021-11-21 00:57:15,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2449 transitions. [2021-11-21 00:57:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:15,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:15,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:15,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-21 00:57:15,551 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:15,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1070957818, now seen corresponding path program 50 times [2021-11-21 00:57:15,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:15,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685026385] [2021-11-21 00:57:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:15,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:16,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:16,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685026385] [2021-11-21 00:57:16,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685026385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:16,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:16,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:16,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790888136] [2021-11-21 00:57:16,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:16,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:16,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:16,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:16,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:16,249 INFO L87 Difference]: Start difference. First operand 848 states and 2449 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:21,359 INFO L93 Difference]: Finished difference Result 1449 states and 3879 transitions. [2021-11-21 00:57:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-21 00:57:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:21,361 INFO L225 Difference]: With dead ends: 1449 [2021-11-21 00:57:21,361 INFO L226 Difference]: Without dead ends: 1442 [2021-11-21 00:57:21,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:57:21,362 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 256 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:21,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 0 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 00:57:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-11-21 00:57:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 850. [2021-11-21 00:57:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 2.895170789163722) internal successors, (2458), 849 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2458 transitions. [2021-11-21 00:57:21,375 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2458 transitions. Word has length 36 [2021-11-21 00:57:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:21,375 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2458 transitions. [2021-11-21 00:57:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2458 transitions. [2021-11-21 00:57:21,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:21,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:21,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:21,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-21 00:57:21,377 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:21,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2000000576, now seen corresponding path program 51 times [2021-11-21 00:57:21,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:21,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991385931] [2021-11-21 00:57:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:21,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:21,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:21,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991385931] [2021-11-21 00:57:21,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991385931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:21,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:21,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:21,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413592207] [2021-11-21 00:57:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:21,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:21,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:21,880 INFO L87 Difference]: Start difference. First operand 850 states and 2458 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:24,081 INFO L93 Difference]: Finished difference Result 1327 states and 3512 transitions. [2021-11-21 00:57:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-21 00:57:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:24,083 INFO L225 Difference]: With dead ends: 1327 [2021-11-21 00:57:24,083 INFO L226 Difference]: Without dead ends: 1320 [2021-11-21 00:57:24,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=266, Invalid=664, Unknown=0, NotChecked=0, Total=930 [2021-11-21 00:57:24,083 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 182 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:24,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 0 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:57:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-11-21 00:57:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 842. [2021-11-21 00:57:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 2.887039239001189) internal successors, (2428), 841 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2428 transitions. [2021-11-21 00:57:24,096 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2428 transitions. Word has length 36 [2021-11-21 00:57:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:24,096 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 2428 transitions. [2021-11-21 00:57:24,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2428 transitions. [2021-11-21 00:57:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:24,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:24,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:24,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-21 00:57:24,097 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2136216786, now seen corresponding path program 52 times [2021-11-21 00:57:24,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:24,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21150988] [2021-11-21 00:57:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:24,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:24,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:24,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21150988] [2021-11-21 00:57:24,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21150988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:24,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:24,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:24,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105971093] [2021-11-21 00:57:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:24,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:24,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:24,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:24,629 INFO L87 Difference]: Start difference. First operand 842 states and 2428 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:26,914 INFO L93 Difference]: Finished difference Result 1397 states and 3667 transitions. [2021-11-21 00:57:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:57:26,915 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:26,916 INFO L225 Difference]: With dead ends: 1397 [2021-11-21 00:57:26,917 INFO L226 Difference]: Without dead ends: 1390 [2021-11-21 00:57:26,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:57:26,917 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:26,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 00:57:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-21 00:57:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 854. [2021-11-21 00:57:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.8862837045720986) internal successors, (2462), 853 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2462 transitions. [2021-11-21 00:57:26,930 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2462 transitions. Word has length 36 [2021-11-21 00:57:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:26,930 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2462 transitions. [2021-11-21 00:57:26,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2462 transitions. [2021-11-21 00:57:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:26,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:26,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:26,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-21 00:57:26,932 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:26,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash -721255954, now seen corresponding path program 53 times [2021-11-21 00:57:26,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:26,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496195968] [2021-11-21 00:57:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:26,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:27,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496195968] [2021-11-21 00:57:27,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496195968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:27,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:27,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:27,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686423297] [2021-11-21 00:57:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:27,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:27,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:27,595 INFO L87 Difference]: Start difference. First operand 854 states and 2462 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:30,136 INFO L93 Difference]: Finished difference Result 1415 states and 3703 transitions. [2021-11-21 00:57:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:57:30,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:30,138 INFO L225 Difference]: With dead ends: 1415 [2021-11-21 00:57:30,138 INFO L226 Difference]: Without dead ends: 1408 [2021-11-21 00:57:30,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:57:30,139 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:30,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:57:30,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-11-21 00:57:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 856. [2021-11-21 00:57:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 2.8900584795321635) internal successors, (2471), 855 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2471 transitions. [2021-11-21 00:57:30,151 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2471 transitions. Word has length 36 [2021-11-21 00:57:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:30,152 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 2471 transitions. [2021-11-21 00:57:30,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2471 transitions. [2021-11-21 00:57:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:30,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:30,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:30,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-21 00:57:30,153 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1650298712, now seen corresponding path program 54 times [2021-11-21 00:57:30,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:30,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132972730] [2021-11-21 00:57:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:30,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:30,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:30,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132972730] [2021-11-21 00:57:30,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132972730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:30,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:30,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:57:30,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062867563] [2021-11-21 00:57:30,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:30,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:57:30,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:57:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:57:30,602 INFO L87 Difference]: Start difference. First operand 856 states and 2471 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:31,410 INFO L93 Difference]: Finished difference Result 1319 states and 3499 transitions. [2021-11-21 00:57:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:31,410 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:31,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:31,412 INFO L225 Difference]: With dead ends: 1319 [2021-11-21 00:57:31,412 INFO L226 Difference]: Without dead ends: 1312 [2021-11-21 00:57:31,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:57:31,412 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 233 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:31,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 0 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-21 00:57:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 856. [2021-11-21 00:57:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 2.8900584795321635) internal successors, (2471), 855 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2471 transitions. [2021-11-21 00:57:31,424 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2471 transitions. Word has length 36 [2021-11-21 00:57:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:31,424 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 2471 transitions. [2021-11-21 00:57:31,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2471 transitions. [2021-11-21 00:57:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:31,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:31,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:31,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-21 00:57:31,426 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1118182280, now seen corresponding path program 55 times [2021-11-21 00:57:31,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:31,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054230278] [2021-11-21 00:57:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:31,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:32,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:32,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054230278] [2021-11-21 00:57:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054230278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:32,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:32,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:32,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564864078] [2021-11-21 00:57:32,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:32,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:32,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:32,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:32,067 INFO L87 Difference]: Start difference. First operand 856 states and 2471 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:36,956 INFO L93 Difference]: Finished difference Result 1594 states and 4237 transitions. [2021-11-21 00:57:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-21 00:57:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:36,958 INFO L225 Difference]: With dead ends: 1594 [2021-11-21 00:57:36,958 INFO L226 Difference]: Without dead ends: 1587 [2021-11-21 00:57:36,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=450, Invalid=1356, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 00:57:36,959 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 281 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:36,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:57:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-21 00:57:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 854. [2021-11-21 00:57:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.8862837045720986) internal successors, (2462), 853 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2462 transitions. [2021-11-21 00:57:36,976 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2462 transitions. Word has length 36 [2021-11-21 00:57:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:36,976 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2462 transitions. [2021-11-21 00:57:36,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:36,977 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2462 transitions. [2021-11-21 00:57:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:36,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:36,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:36,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-21 00:57:36,978 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -800403282, now seen corresponding path program 56 times [2021-11-21 00:57:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485508651] [2021-11-21 00:57:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:37,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:37,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485508651] [2021-11-21 00:57:37,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485508651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:37,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:37,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:37,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731907027] [2021-11-21 00:57:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:37,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:37,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:37,662 INFO L87 Difference]: Start difference. First operand 854 states and 2462 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:41,409 INFO L93 Difference]: Finished difference Result 1427 states and 3763 transitions. [2021-11-21 00:57:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:57:41,410 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:41,412 INFO L225 Difference]: With dead ends: 1427 [2021-11-21 00:57:41,412 INFO L226 Difference]: Without dead ends: 1420 [2021-11-21 00:57:41,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:57:41,412 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:41,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:57:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-21 00:57:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 836. [2021-11-21 00:57:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 2.8898203592814373) internal successors, (2413), 835 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2413 transitions. [2021-11-21 00:57:41,428 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2413 transitions. Word has length 36 [2021-11-21 00:57:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:41,428 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2413 transitions. [2021-11-21 00:57:41,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2413 transitions. [2021-11-21 00:57:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:41,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:41,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:41,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-21 00:57:41,430 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1255715018, now seen corresponding path program 57 times [2021-11-21 00:57:41,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:41,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790715399] [2021-11-21 00:57:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:41,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:42,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:42,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790715399] [2021-11-21 00:57:42,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790715399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:42,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:42,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:42,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941487906] [2021-11-21 00:57:42,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:42,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:42,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:42,040 INFO L87 Difference]: Start difference. First operand 836 states and 2413 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:44,255 INFO L93 Difference]: Finished difference Result 1395 states and 3659 transitions. [2021-11-21 00:57:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:57:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:44,257 INFO L225 Difference]: With dead ends: 1395 [2021-11-21 00:57:44,257 INFO L226 Difference]: Without dead ends: 1388 [2021-11-21 00:57:44,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:57:44,258 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 232 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:44,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 0 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:57:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-11-21 00:57:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 846. [2021-11-21 00:57:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.8875739644970415) internal successors, (2440), 845 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2440 transitions. [2021-11-21 00:57:44,272 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2440 transitions. Word has length 36 [2021-11-21 00:57:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:44,272 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2440 transitions. [2021-11-21 00:57:44,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2440 transitions. [2021-11-21 00:57:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:44,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:44,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:44,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-21 00:57:44,274 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1986482676, now seen corresponding path program 58 times [2021-11-21 00:57:44,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:44,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439756997] [2021-11-21 00:57:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:44,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:44,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439756997] [2021-11-21 00:57:44,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439756997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:44,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:44,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:44,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751958618] [2021-11-21 00:57:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:44,745 INFO L87 Difference]: Start difference. First operand 846 states and 2440 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:45,618 INFO L93 Difference]: Finished difference Result 1305 states and 3458 transitions. [2021-11-21 00:57:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:45,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:45,620 INFO L225 Difference]: With dead ends: 1305 [2021-11-21 00:57:45,620 INFO L226 Difference]: Without dead ends: 1298 [2021-11-21 00:57:45,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:45,620 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:45,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:57:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-21 00:57:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 868. [2021-11-21 00:57:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.8961937716262978) internal successors, (2511), 867 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2511 transitions. [2021-11-21 00:57:45,633 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2511 transitions. Word has length 36 [2021-11-21 00:57:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:45,634 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2511 transitions. [2021-11-21 00:57:45,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2511 transitions. [2021-11-21 00:57:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:45,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:45,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:45,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-21 00:57:45,635 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1379441862, now seen corresponding path program 59 times [2021-11-21 00:57:45,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:45,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853919602] [2021-11-21 00:57:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:45,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:46,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:46,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853919602] [2021-11-21 00:57:46,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853919602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:46,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:46,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:46,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341080430] [2021-11-21 00:57:46,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:46,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:46,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:46,190 INFO L87 Difference]: Start difference. First operand 868 states and 2511 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:47,241 INFO L93 Difference]: Finished difference Result 1297 states and 3444 transitions. [2021-11-21 00:57:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:47,243 INFO L225 Difference]: With dead ends: 1297 [2021-11-21 00:57:47,243 INFO L226 Difference]: Without dead ends: 1290 [2021-11-21 00:57:47,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:47,244 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:47,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 0 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:57:47,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-11-21 00:57:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 844. [2021-11-21 00:57:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.8908659549228943) internal successors, (2437), 843 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2437 transitions. [2021-11-21 00:57:47,256 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2437 transitions. Word has length 36 [2021-11-21 00:57:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:47,256 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2437 transitions. [2021-11-21 00:57:47,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2437 transitions. [2021-11-21 00:57:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:47,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:47,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:47,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-21 00:57:47,258 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:47,258 INFO L85 PathProgramCache]: Analyzing trace with hash 312285702, now seen corresponding path program 60 times [2021-11-21 00:57:47,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:47,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884042533] [2021-11-21 00:57:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:47,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:47,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:47,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884042533] [2021-11-21 00:57:47,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884042533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:47,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:47,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:47,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413541954] [2021-11-21 00:57:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:47,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:47,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:47,884 INFO L87 Difference]: Start difference. First operand 844 states and 2437 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:51,864 INFO L93 Difference]: Finished difference Result 1313 states and 3496 transitions. [2021-11-21 00:57:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:57:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:51,866 INFO L225 Difference]: With dead ends: 1313 [2021-11-21 00:57:51,866 INFO L226 Difference]: Without dead ends: 1306 [2021-11-21 00:57:51,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:57:51,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 212 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:51,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 0 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 00:57:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-21 00:57:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 846. [2021-11-21 00:57:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.8875739644970415) internal successors, (2440), 845 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2440 transitions. [2021-11-21 00:57:51,888 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2440 transitions. Word has length 36 [2021-11-21 00:57:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:51,889 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2440 transitions. [2021-11-21 00:57:51,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2440 transitions. [2021-11-21 00:57:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:51,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:51,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:51,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-21 00:57:51,891 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 705488220, now seen corresponding path program 61 times [2021-11-21 00:57:51,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:51,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68992855] [2021-11-21 00:57:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:51,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:52,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:52,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68992855] [2021-11-21 00:57:52,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68992855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:52,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:52,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:57:52,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033045992] [2021-11-21 00:57:52,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:52,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:57:52,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:57:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:57:52,592 INFO L87 Difference]: Start difference. First operand 846 states and 2440 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:56,319 INFO L93 Difference]: Finished difference Result 1365 states and 3582 transitions. [2021-11-21 00:57:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:57:56,319 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:56,321 INFO L225 Difference]: With dead ends: 1365 [2021-11-21 00:57:56,321 INFO L226 Difference]: Without dead ends: 1358 [2021-11-21 00:57:56,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 00:57:56,321 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:56,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:57:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-11-21 00:57:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 844. [2021-11-21 00:57:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.886120996441281) internal successors, (2433), 843 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2433 transitions. [2021-11-21 00:57:56,335 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2433 transitions. Word has length 36 [2021-11-21 00:57:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:56,335 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2433 transitions. [2021-11-21 00:57:56,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2433 transitions. [2021-11-21 00:57:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:56,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:56,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:56,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-21 00:57:56,336 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:56,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2048335858, now seen corresponding path program 62 times [2021-11-21 00:57:56,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:56,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44974120] [2021-11-21 00:57:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:56,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:56,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:56,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44974120] [2021-11-21 00:57:56,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44974120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:56,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:56,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:57:56,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741677277] [2021-11-21 00:57:56,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:56,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:57:56,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:57:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:57:56,797 INFO L87 Difference]: Start difference. First operand 844 states and 2433 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:57:57,707 INFO L93 Difference]: Finished difference Result 1614 states and 4432 transitions. [2021-11-21 00:57:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:57:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:57:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:57:57,710 INFO L225 Difference]: With dead ends: 1614 [2021-11-21 00:57:57,710 INFO L226 Difference]: Without dead ends: 1607 [2021-11-21 00:57:57,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:57:57,710 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 176 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:57:57,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 0 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:57:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2021-11-21 00:57:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 868. [2021-11-21 00:57:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.9019607843137254) internal successors, (2516), 867 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2516 transitions. [2021-11-21 00:57:57,726 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2516 transitions. Word has length 36 [2021-11-21 00:57:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:57:57,726 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2516 transitions. [2021-11-21 00:57:57,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:57:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2516 transitions. [2021-11-21 00:57:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:57:57,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:57:57,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:57:57,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-21 00:57:57,728 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:57:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:57:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1317568200, now seen corresponding path program 63 times [2021-11-21 00:57:57,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:57:57,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350549808] [2021-11-21 00:57:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:57:57,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:57:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:57:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:57:58,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:57:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350549808] [2021-11-21 00:57:58,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350549808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:57:58,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:57:58,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:57:58,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801153534] [2021-11-21 00:57:58,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:57:58,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:57:58,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:57:58,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:57:58,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:57:58,210 INFO L87 Difference]: Start difference. First operand 868 states and 2516 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:02,410 INFO L93 Difference]: Finished difference Result 2073 states and 5622 transitions. [2021-11-21 00:58:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:58:02,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:02,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:02,414 INFO L225 Difference]: With dead ends: 2073 [2021-11-21 00:58:02,414 INFO L226 Difference]: Without dead ends: 2066 [2021-11-21 00:58:02,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=505, Invalid=1565, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 00:58:02,414 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:02,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:58:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-11-21 00:58:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 882. [2021-11-21 00:58:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.9069239500567536) internal successors, (2561), 881 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2561 transitions. [2021-11-21 00:58:02,447 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2561 transitions. Word has length 36 [2021-11-21 00:58:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:02,447 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2561 transitions. [2021-11-21 00:58:02,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2561 transitions. [2021-11-21 00:58:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:02,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:02,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:02,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-21 00:58:02,448 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 388525442, now seen corresponding path program 64 times [2021-11-21 00:58:02,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:02,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955327593] [2021-11-21 00:58:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:02,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:02,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:02,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955327593] [2021-11-21 00:58:02,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955327593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:02,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:02,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:58:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791021948] [2021-11-21 00:58:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:02,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:58:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:58:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:58:02,728 INFO L87 Difference]: Start difference. First operand 882 states and 2561 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:03,462 INFO L93 Difference]: Finished difference Result 1690 states and 4621 transitions. [2021-11-21 00:58:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:58:03,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:03,465 INFO L225 Difference]: With dead ends: 1690 [2021-11-21 00:58:03,465 INFO L226 Difference]: Without dead ends: 1683 [2021-11-21 00:58:03,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:58:03,465 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 221 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:03,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 0 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:58:03,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-21 00:58:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 896. [2021-11-21 00:58:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 2.9072625698324024) internal successors, (2602), 895 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2602 transitions. [2021-11-21 00:58:03,481 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2602 transitions. Word has length 36 [2021-11-21 00:58:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:03,482 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 2602 transitions. [2021-11-21 00:58:03,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2602 transitions. [2021-11-21 00:58:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:03,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:03,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:03,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-21 00:58:03,483 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash -601017362, now seen corresponding path program 65 times [2021-11-21 00:58:03,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:03,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523517867] [2021-11-21 00:58:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:03,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:03,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:03,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523517867] [2021-11-21 00:58:03,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523517867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:03,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:03,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:58:03,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293633282] [2021-11-21 00:58:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:03,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:58:03,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:58:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:58:03,911 INFO L87 Difference]: Start difference. First operand 896 states and 2602 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:04,744 INFO L93 Difference]: Finished difference Result 1700 states and 4634 transitions. [2021-11-21 00:58:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:58:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:04,746 INFO L225 Difference]: With dead ends: 1700 [2021-11-21 00:58:04,747 INFO L226 Difference]: Without dead ends: 1693 [2021-11-21 00:58:04,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:58:04,747 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:04,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:58:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2021-11-21 00:58:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 862. [2021-11-21 00:58:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.902439024390244) internal successors, (2499), 861 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2499 transitions. [2021-11-21 00:58:04,763 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2499 transitions. Word has length 36 [2021-11-21 00:58:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:04,763 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2499 transitions. [2021-11-21 00:58:04,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2499 transitions. [2021-11-21 00:58:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:04,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:04,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:04,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-21 00:58:04,764 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1036792708, now seen corresponding path program 66 times [2021-11-21 00:58:04,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409793309] [2021-11-21 00:58:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:04,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:05,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409793309] [2021-11-21 00:58:05,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409793309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:05,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:05,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:58:05,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034747116] [2021-11-21 00:58:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:58:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:58:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:58:05,178 INFO L87 Difference]: Start difference. First operand 862 states and 2499 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:05,906 INFO L93 Difference]: Finished difference Result 1576 states and 4332 transitions. [2021-11-21 00:58:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:58:05,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:05,908 INFO L225 Difference]: With dead ends: 1576 [2021-11-21 00:58:05,908 INFO L226 Difference]: Without dead ends: 1569 [2021-11-21 00:58:05,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:58:05,909 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 225 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:05,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 0 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:58:05,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2021-11-21 00:58:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 865. [2021-11-21 00:58:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 2.900462962962963) internal successors, (2506), 864 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2506 transitions. [2021-11-21 00:58:05,925 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2506 transitions. Word has length 36 [2021-11-21 00:58:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:05,925 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2506 transitions. [2021-11-21 00:58:05,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2506 transitions. [2021-11-21 00:58:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:05,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:05,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:05,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-21 00:58:05,926 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:05,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1397419570, now seen corresponding path program 67 times [2021-11-21 00:58:05,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77496225] [2021-11-21 00:58:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:05,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:06,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:06,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77496225] [2021-11-21 00:58:06,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77496225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:06,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:06,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:58:06,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671605025] [2021-11-21 00:58:06,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:06,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:58:06,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:58:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:58:06,420 INFO L87 Difference]: Start difference. First operand 865 states and 2506 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:07,304 INFO L93 Difference]: Finished difference Result 1604 states and 4390 transitions. [2021-11-21 00:58:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:58:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:07,307 INFO L225 Difference]: With dead ends: 1604 [2021-11-21 00:58:07,307 INFO L226 Difference]: Without dead ends: 1590 [2021-11-21 00:58:07,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:58:07,308 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 201 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:07,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 0 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:58:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-21 00:58:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 874. [2021-11-21 00:58:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 2.8946162657502863) internal successors, (2527), 873 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 2527 transitions. [2021-11-21 00:58:07,328 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 2527 transitions. Word has length 36 [2021-11-21 00:58:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:07,328 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 2527 transitions. [2021-11-21 00:58:07,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 2527 transitions. [2021-11-21 00:58:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:07,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:07,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:07,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-21 00:58:07,329 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash -639040214, now seen corresponding path program 68 times [2021-11-21 00:58:07,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:07,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517352143] [2021-11-21 00:58:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:07,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:07,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:07,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517352143] [2021-11-21 00:58:07,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517352143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:07,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:07,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:58:07,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013115120] [2021-11-21 00:58:07,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:07,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:58:07,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:58:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:58:07,797 INFO L87 Difference]: Start difference. First operand 874 states and 2527 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:09,230 INFO L93 Difference]: Finished difference Result 1777 states and 4877 transitions. [2021-11-21 00:58:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:58:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:09,234 INFO L225 Difference]: With dead ends: 1777 [2021-11-21 00:58:09,234 INFO L226 Difference]: Without dead ends: 1770 [2021-11-21 00:58:09,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2021-11-21 00:58:09,234 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:09,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:58:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-11-21 00:58:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 886. [2021-11-21 00:58:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 2.8937853107344633) internal successors, (2561), 885 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2561 transitions. [2021-11-21 00:58:09,252 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2561 transitions. Word has length 36 [2021-11-21 00:58:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:09,252 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2561 transitions. [2021-11-21 00:58:09,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2561 transitions. [2021-11-21 00:58:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:09,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:09,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:09,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-21 00:58:09,253 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1864635008, now seen corresponding path program 69 times [2021-11-21 00:58:09,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809765065] [2021-11-21 00:58:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:09,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:09,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:09,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809765065] [2021-11-21 00:58:09,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809765065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:09,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:09,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:58:09,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323755705] [2021-11-21 00:58:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:09,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:58:09,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:09,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:58:09,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:58:09,662 INFO L87 Difference]: Start difference. First operand 886 states and 2561 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:11,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:11,499 INFO L93 Difference]: Finished difference Result 1786 states and 4891 transitions. [2021-11-21 00:58:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:58:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:11,502 INFO L225 Difference]: With dead ends: 1786 [2021-11-21 00:58:11,502 INFO L226 Difference]: Without dead ends: 1779 [2021-11-21 00:58:11,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:58:11,503 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:11,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:58:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-21 00:58:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 877. [2021-11-21 00:58:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 2.8995433789954337) internal successors, (2540), 876 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2540 transitions. [2021-11-21 00:58:11,519 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2540 transitions. Word has length 36 [2021-11-21 00:58:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:11,520 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 2540 transitions. [2021-11-21 00:58:11,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2540 transitions. [2021-11-21 00:58:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:58:11,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:11,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:11,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-21 00:58:11,521 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:58:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1718586808, now seen corresponding path program 70 times [2021-11-21 00:58:11,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:11,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407394297] [2021-11-21 00:58:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:11,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:11,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:11,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407394297] [2021-11-21 00:58:11,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407394297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:11,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:11,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 00:58:11,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755118609] [2021-11-21 00:58:11,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:11,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:58:11,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:11,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:58:11,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:58:11,835 INFO L87 Difference]: Start difference. First operand 877 states and 2540 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:58:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:12,465 INFO L93 Difference]: Finished difference Result 1577 states and 4361 transitions. [2021-11-21 00:58:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:58:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 00:58:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:12,468 INFO L225 Difference]: With dead ends: 1577 [2021-11-21 00:58:12,468 INFO L226 Difference]: Without dead ends: 1563 [2021-11-21 00:58:12,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:58:12,468 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 174 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:12,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 0 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2021-11-21 01:00:37,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918233907] [2021-11-21 01:00:37,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:37,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:37,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:37,192 INFO L87 Difference]: Start difference. First operand 835 states and 2372 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:37,626 INFO L93 Difference]: Finished difference Result 886 states and 2442 transitions. [2021-11-21 01:00:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:37,628 INFO L225 Difference]: With dead ends: 886 [2021-11-21 01:00:37,628 INFO L226 Difference]: Without dead ends: 872 [2021-11-21 01:00:37,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:37,629 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 230 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:37,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 0 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-21 01:00:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 839. [2021-11-21 01:00:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 2.837708830548926) internal successors, (2378), 838 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 2378 transitions. [2021-11-21 01:00:37,643 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 2378 transitions. Word has length 36 [2021-11-21 01:00:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:37,643 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 2378 transitions. [2021-11-21 01:00:37,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 2378 transitions. [2021-11-21 01:00:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:37,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:37,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:37,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-11-21 01:00:37,646 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -708058384, now seen corresponding path program 45 times [2021-11-21 01:00:37,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:37,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523818959] [2021-11-21 01:00:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:37,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:38,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523818959] [2021-11-21 01:00:38,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523818959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:38,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:38,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:38,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696870186] [2021-11-21 01:00:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:38,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:38,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:38,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:38,073 INFO L87 Difference]: Start difference. First operand 839 states and 2378 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:38,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:38,497 INFO L93 Difference]: Finished difference Result 870 states and 2419 transitions. [2021-11-21 01:00:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:38,497 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:38,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:38,499 INFO L225 Difference]: With dead ends: 870 [2021-11-21 01:00:38,499 INFO L226 Difference]: Without dead ends: 846 [2021-11-21 01:00:38,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:38,499 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 202 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:38,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 0 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-11-21 01:00:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 809. [2021-11-21 01:00:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.860148514851485) internal successors, (2311), 808 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2311 transitions. [2021-11-21 01:00:38,511 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2311 transitions. Word has length 36 [2021-11-21 01:00:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:38,511 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2311 transitions. [2021-11-21 01:00:38,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2311 transitions. [2021-11-21 01:00:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:38,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:38,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:38,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-11-21 01:00:38,512 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1673887026, now seen corresponding path program 46 times [2021-11-21 01:00:38,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:38,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920011485] [2021-11-21 01:00:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:38,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:38,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:38,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920011485] [2021-11-21 01:00:38,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920011485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:38,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:38,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:38,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089389680] [2021-11-21 01:00:38,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:38,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:38,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:38,834 INFO L87 Difference]: Start difference. First operand 809 states and 2311 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:39,312 INFO L93 Difference]: Finished difference Result 910 states and 2522 transitions. [2021-11-21 01:00:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:39,314 INFO L225 Difference]: With dead ends: 910 [2021-11-21 01:00:39,314 INFO L226 Difference]: Without dead ends: 890 [2021-11-21 01:00:39,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:00:39,315 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:39,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-21 01:00:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 804. [2021-11-21 01:00:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.8655043586550435) internal successors, (2301), 803 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2301 transitions. [2021-11-21 01:00:39,326 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2301 transitions. Word has length 36 [2021-11-21 01:00:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:39,326 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 2301 transitions. [2021-11-21 01:00:39,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2301 transitions. [2021-11-21 01:00:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:39,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:39,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:39,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-11-21 01:00:39,328 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash 645777528, now seen corresponding path program 47 times [2021-11-21 01:00:39,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:39,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574296323] [2021-11-21 01:00:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:39,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:39,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574296323] [2021-11-21 01:00:39,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574296323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:39,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:39,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:39,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260151593] [2021-11-21 01:00:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:39,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:39,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:39,594 INFO L87 Difference]: Start difference. First operand 804 states and 2301 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:39,979 INFO L93 Difference]: Finished difference Result 861 states and 2441 transitions. [2021-11-21 01:00:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:39,981 INFO L225 Difference]: With dead ends: 861 [2021-11-21 01:00:39,981 INFO L226 Difference]: Without dead ends: 850 [2021-11-21 01:00:39,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:39,981 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:39,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-21 01:00:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 811. [2021-11-21 01:00:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 810 states have (on average 2.8567901234567903) internal successors, (2314), 810 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 2314 transitions. [2021-11-21 01:00:39,991 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 2314 transitions. Word has length 36 [2021-11-21 01:00:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:39,992 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 2314 transitions. [2021-11-21 01:00:39,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 2314 transitions. [2021-11-21 01:00:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:39,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:39,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-11-21 01:00:39,993 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash 647561466, now seen corresponding path program 48 times [2021-11-21 01:00:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:39,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119324418] [2021-11-21 01:00:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:39,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:40,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:40,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119324418] [2021-11-21 01:00:40,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119324418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:40,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:40,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:40,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266592071] [2021-11-21 01:00:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:40,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:40,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:40,214 INFO L87 Difference]: Start difference. First operand 811 states and 2314 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:40,594 INFO L93 Difference]: Finished difference Result 865 states and 2443 transitions. [2021-11-21 01:00:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:40,596 INFO L225 Difference]: With dead ends: 865 [2021-11-21 01:00:40,596 INFO L226 Difference]: Without dead ends: 846 [2021-11-21 01:00:40,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:40,596 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 134 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:40,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 0 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-11-21 01:00:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 806. [2021-11-21 01:00:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.862111801242236) internal successors, (2304), 805 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2304 transitions. [2021-11-21 01:00:40,606 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2304 transitions. Word has length 36 [2021-11-21 01:00:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:40,606 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2304 transitions. [2021-11-21 01:00:40,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2304 transitions. [2021-11-21 01:00:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:40,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:40,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:40,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-11-21 01:00:40,607 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:40,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1065356914, now seen corresponding path program 49 times [2021-11-21 01:00:40,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:40,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553779219] [2021-11-21 01:00:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:40,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:40,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:40,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553779219] [2021-11-21 01:00:40,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553779219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:40,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:40,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:40,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174226435] [2021-11-21 01:00:40,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:40,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:40,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:40,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:40,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:40,897 INFO L87 Difference]: Start difference. First operand 806 states and 2304 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:41,264 INFO L93 Difference]: Finished difference Result 860 states and 2433 transitions. [2021-11-21 01:00:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:41,266 INFO L225 Difference]: With dead ends: 860 [2021-11-21 01:00:41,266 INFO L226 Difference]: Without dead ends: 844 [2021-11-21 01:00:41,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:41,266 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:41,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-21 01:00:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 805. [2021-11-21 01:00:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.86318407960199) internal successors, (2302), 804 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2302 transitions. [2021-11-21 01:00:41,276 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2302 transitions. Word has length 36 [2021-11-21 01:00:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:41,276 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2302 transitions. [2021-11-21 01:00:41,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2302 transitions. [2021-11-21 01:00:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:41,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:41,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:41,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-11-21 01:00:41,278 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1969237902, now seen corresponding path program 50 times [2021-11-21 01:00:41,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:41,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921149396] [2021-11-21 01:00:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:41,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:41,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:41,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921149396] [2021-11-21 01:00:41,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921149396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:41,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:41,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:41,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761044832] [2021-11-21 01:00:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:41,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:41,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:41,472 INFO L87 Difference]: Start difference. First operand 805 states and 2302 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:41,825 INFO L93 Difference]: Finished difference Result 873 states and 2450 transitions. [2021-11-21 01:00:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:41,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:41,827 INFO L225 Difference]: With dead ends: 873 [2021-11-21 01:00:41,827 INFO L226 Difference]: Without dead ends: 859 [2021-11-21 01:00:41,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:00:41,827 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 137 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:41,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 0 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-21 01:00:41,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 809. [2021-11-21 01:00:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.8564356435643563) internal successors, (2308), 808 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2308 transitions. [2021-11-21 01:00:41,838 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2308 transitions. Word has length 36 [2021-11-21 01:00:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:41,838 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2308 transitions. [2021-11-21 01:00:41,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2308 transitions. [2021-11-21 01:00:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:41,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:41,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:41,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-11-21 01:00:41,840 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1755490324, now seen corresponding path program 51 times [2021-11-21 01:00:41,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:41,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772232616] [2021-11-21 01:00:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:41,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:42,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:42,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772232616] [2021-11-21 01:00:42,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772232616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:42,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:42,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:42,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294054984] [2021-11-21 01:00:42,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:42,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:42,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:42,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:42,126 INFO L87 Difference]: Start difference. First operand 809 states and 2308 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:42,527 INFO L93 Difference]: Finished difference Result 857 states and 2427 transitions. [2021-11-21 01:00:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:42,528 INFO L225 Difference]: With dead ends: 857 [2021-11-21 01:00:42,529 INFO L226 Difference]: Without dead ends: 845 [2021-11-21 01:00:42,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:00:42,529 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:42,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-11-21 01:00:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 806. [2021-11-21 01:00:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.860869565217391) internal successors, (2303), 805 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2303 transitions. [2021-11-21 01:00:42,539 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2303 transitions. Word has length 36 [2021-11-21 01:00:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:42,540 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2303 transitions. [2021-11-21 01:00:42,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2303 transitions. [2021-11-21 01:00:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:42,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:42,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:42,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-11-21 01:00:42,541 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash 417778024, now seen corresponding path program 52 times [2021-11-21 01:00:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548389607] [2021-11-21 01:00:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:42,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:42,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548389607] [2021-11-21 01:00:42,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548389607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:42,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137283861] [2021-11-21 01:00:42,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:42,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:42,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:42,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:42,864 INFO L87 Difference]: Start difference. First operand 806 states and 2303 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:43,240 INFO L93 Difference]: Finished difference Result 860 states and 2432 transitions. [2021-11-21 01:00:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:43,242 INFO L225 Difference]: With dead ends: 860 [2021-11-21 01:00:43,242 INFO L226 Difference]: Without dead ends: 839 [2021-11-21 01:00:43,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:43,243 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:43,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-21 01:00:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 800. [2021-11-21 01:00:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.867334167709637) internal successors, (2291), 799 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2291 transitions. [2021-11-21 01:00:43,253 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2291 transitions. Word has length 36 [2021-11-21 01:00:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:43,253 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2291 transitions. [2021-11-21 01:00:43,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2291 transitions. [2021-11-21 01:00:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:43,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:43,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:43,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-11-21 01:00:43,255 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:43,255 INFO L85 PathProgramCache]: Analyzing trace with hash 40957104, now seen corresponding path program 53 times [2021-11-21 01:00:43,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:43,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242524801] [2021-11-21 01:00:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:43,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:43,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:43,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242524801] [2021-11-21 01:00:43,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242524801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:43,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:43,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:43,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335172867] [2021-11-21 01:00:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:43,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:43,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:43,505 INFO L87 Difference]: Start difference. First operand 800 states and 2291 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:43,902 INFO L93 Difference]: Finished difference Result 823 states and 2331 transitions. [2021-11-21 01:00:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:43,903 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:43,904 INFO L225 Difference]: With dead ends: 823 [2021-11-21 01:00:43,904 INFO L226 Difference]: Without dead ends: 812 [2021-11-21 01:00:43,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:00:43,904 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:43,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-11-21 01:00:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 806. [2021-11-21 01:00:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.8596273291925467) internal successors, (2302), 805 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2302 transitions. [2021-11-21 01:00:43,914 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2302 transitions. Word has length 36 [2021-11-21 01:00:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:43,915 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2302 transitions. [2021-11-21 01:00:43,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2302 transitions. [2021-11-21 01:00:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:43,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:43,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:43,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-11-21 01:00:43,916 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash 42741042, now seen corresponding path program 54 times [2021-11-21 01:00:43,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:43,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852082732] [2021-11-21 01:00:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:43,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:44,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:44,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852082732] [2021-11-21 01:00:44,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852082732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:44,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:44,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:44,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68024112] [2021-11-21 01:00:44,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:44,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:44,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:44,147 INFO L87 Difference]: Start difference. First operand 806 states and 2302 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:44,497 INFO L93 Difference]: Finished difference Result 827 states and 2333 transitions. [2021-11-21 01:00:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:44,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:44,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:44,499 INFO L225 Difference]: With dead ends: 827 [2021-11-21 01:00:44,499 INFO L226 Difference]: Without dead ends: 808 [2021-11-21 01:00:44,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:00:44,499 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:44,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:00:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-11-21 01:00:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 801. [2021-11-21 01:00:44,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 2.865) internal successors, (2292), 800 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 2292 transitions. [2021-11-21 01:00:44,509 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 2292 transitions. Word has length 36 [2021-11-21 01:00:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:44,510 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 2292 transitions. [2021-11-21 01:00:44,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 2292 transitions. [2021-11-21 01:00:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:44,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:44,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:44,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-11-21 01:00:44,511 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1670177338, now seen corresponding path program 55 times [2021-11-21 01:00:44,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:44,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161037659] [2021-11-21 01:00:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:44,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:44,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:44,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161037659] [2021-11-21 01:00:44,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161037659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:44,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:44,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:44,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122693388] [2021-11-21 01:00:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:44,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:44,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:44,869 INFO L87 Difference]: Start difference. First operand 801 states and 2292 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:45,275 INFO L93 Difference]: Finished difference Result 822 states and 2323 transitions. [2021-11-21 01:00:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:45,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:45,277 INFO L225 Difference]: With dead ends: 822 [2021-11-21 01:00:45,277 INFO L226 Difference]: Without dead ends: 806 [2021-11-21 01:00:45,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:45,277 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 164 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:45,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-11-21 01:00:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 800. [2021-11-21 01:00:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.8660826032540676) internal successors, (2290), 799 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2290 transitions. [2021-11-21 01:00:45,287 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2290 transitions. Word has length 36 [2021-11-21 01:00:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:45,287 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2290 transitions. [2021-11-21 01:00:45,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2290 transitions. [2021-11-21 01:00:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:45,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:45,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:45,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-11-21 01:00:45,289 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1364417478, now seen corresponding path program 56 times [2021-11-21 01:00:45,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:45,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491426527] [2021-11-21 01:00:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:45,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:45,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:45,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491426527] [2021-11-21 01:00:45,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491426527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:45,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:45,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:45,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853869056] [2021-11-21 01:00:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:45,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:45,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:45,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:45,495 INFO L87 Difference]: Start difference. First operand 800 states and 2290 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:45,864 INFO L93 Difference]: Finished difference Result 835 states and 2340 transitions. [2021-11-21 01:00:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:45,865 INFO L225 Difference]: With dead ends: 835 [2021-11-21 01:00:45,865 INFO L226 Difference]: Without dead ends: 821 [2021-11-21 01:00:45,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:45,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:45,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-11-21 01:00:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 804. [2021-11-21 01:00:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.859277708592777) internal successors, (2296), 803 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2296 transitions. [2021-11-21 01:00:45,877 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2296 transitions. Word has length 36 [2021-11-21 01:00:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:45,877 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 2296 transitions. [2021-11-21 01:00:45,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2296 transitions. [2021-11-21 01:00:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:45,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:45,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:45,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-11-21 01:00:45,878 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1150669900, now seen corresponding path program 57 times [2021-11-21 01:00:45,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:45,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840329328] [2021-11-21 01:00:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:45,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:46,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:46,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840329328] [2021-11-21 01:00:46,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840329328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:46,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:46,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:46,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147834037] [2021-11-21 01:00:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:46,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:46,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:46,349 INFO L87 Difference]: Start difference. First operand 804 states and 2296 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:46,792 INFO L93 Difference]: Finished difference Result 819 states and 2317 transitions. [2021-11-21 01:00:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:46,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:46,794 INFO L225 Difference]: With dead ends: 819 [2021-11-21 01:00:46,794 INFO L226 Difference]: Without dead ends: 807 [2021-11-21 01:00:46,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:46,794 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:46,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 0 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-11-21 01:00:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 801. [2021-11-21 01:00:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 2.86375) internal successors, (2291), 800 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 2291 transitions. [2021-11-21 01:00:46,821 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 2291 transitions. Word has length 36 [2021-11-21 01:00:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:46,821 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 2291 transitions. [2021-11-21 01:00:46,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 2291 transitions. [2021-11-21 01:00:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:46,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:46,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:46,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-11-21 01:00:46,822 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash -187042400, now seen corresponding path program 58 times [2021-11-21 01:00:46,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:46,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634206667] [2021-11-21 01:00:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:46,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:47,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:47,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634206667] [2021-11-21 01:00:47,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634206667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:47,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:47,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:47,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97526608] [2021-11-21 01:00:47,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:47,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:47,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:47,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:47,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:47,118 INFO L87 Difference]: Start difference. First operand 801 states and 2291 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:47,477 INFO L93 Difference]: Finished difference Result 822 states and 2322 transitions. [2021-11-21 01:00:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:47,478 INFO L225 Difference]: With dead ends: 822 [2021-11-21 01:00:47,478 INFO L226 Difference]: Without dead ends: 805 [2021-11-21 01:00:47,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:47,479 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:47,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-21 01:00:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 799. [2021-11-21 01:00:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.8659147869674184) internal successors, (2287), 798 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 2287 transitions. [2021-11-21 01:00:47,489 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 2287 transitions. Word has length 36 [2021-11-21 01:00:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:47,489 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 2287 transitions. [2021-11-21 01:00:47,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 2287 transitions. [2021-11-21 01:00:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:47,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:47,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:47,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-11-21 01:00:47,490 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash -67266832, now seen corresponding path program 59 times [2021-11-21 01:00:47,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:47,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798124094] [2021-11-21 01:00:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:47,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:47,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798124094] [2021-11-21 01:00:47,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798124094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:47,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:47,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:47,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202280702] [2021-11-21 01:00:47,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:47,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:47,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:47,768 INFO L87 Difference]: Start difference. First operand 799 states and 2287 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:48,149 INFO L93 Difference]: Finished difference Result 860 states and 2447 transitions. [2021-11-21 01:00:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:48,151 INFO L225 Difference]: With dead ends: 860 [2021-11-21 01:00:48,151 INFO L226 Difference]: Without dead ends: 849 [2021-11-21 01:00:48,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:48,151 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:48,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-21 01:00:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 825. [2021-11-21 01:00:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 2.878640776699029) internal successors, (2372), 824 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2372 transitions. [2021-11-21 01:00:48,162 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2372 transitions. Word has length 36 [2021-11-21 01:00:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:48,162 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 2372 transitions. [2021-11-21 01:00:48,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2372 transitions. [2021-11-21 01:00:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:48,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:48,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:48,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-11-21 01:00:48,163 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash -65482894, now seen corresponding path program 60 times [2021-11-21 01:00:48,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:48,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330249295] [2021-11-21 01:00:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:48,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:48,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:48,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330249295] [2021-11-21 01:00:48,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330249295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:48,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:48,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:48,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019937770] [2021-11-21 01:00:48,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:48,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:48,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:48,425 INFO L87 Difference]: Start difference. First operand 825 states and 2372 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:48,778 INFO L93 Difference]: Finished difference Result 871 states and 2455 transitions. [2021-11-21 01:00:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:00:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:48,780 INFO L225 Difference]: With dead ends: 871 [2021-11-21 01:00:48,780 INFO L226 Difference]: Without dead ends: 852 [2021-11-21 01:00:48,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:00:48,780 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:48,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-21 01:00:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 820. [2021-11-21 01:00:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.8815628815628815) internal successors, (2360), 819 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2360 transitions. [2021-11-21 01:00:48,791 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2360 transitions. Word has length 36 [2021-11-21 01:00:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:48,791 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2360 transitions. [2021-11-21 01:00:48,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2360 transitions. [2021-11-21 01:00:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:48,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:48,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:48,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-11-21 01:00:48,792 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:48,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1896492842, now seen corresponding path program 61 times [2021-11-21 01:00:48,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:48,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57330662] [2021-11-21 01:00:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:48,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:49,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57330662] [2021-11-21 01:00:49,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57330662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:49,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:49,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:49,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961263840] [2021-11-21 01:00:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:49,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:49,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:49,055 INFO L87 Difference]: Start difference. First operand 820 states and 2360 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:49,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:49,366 INFO L93 Difference]: Finished difference Result 853 states and 2429 transitions. [2021-11-21 01:00:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:49,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:49,368 INFO L225 Difference]: With dead ends: 853 [2021-11-21 01:00:49,368 INFO L226 Difference]: Without dead ends: 842 [2021-11-21 01:00:49,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:49,368 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:49,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:00:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-21 01:00:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 822. [2021-11-21 01:00:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 2.8781973203410476) internal successors, (2363), 821 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2363 transitions. [2021-11-21 01:00:49,379 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2363 transitions. Word has length 36 [2021-11-21 01:00:49,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:49,379 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 2363 transitions. [2021-11-21 01:00:49,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2363 transitions. [2021-11-21 01:00:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:49,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:49,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:49,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-11-21 01:00:49,380 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 946042828, now seen corresponding path program 62 times [2021-11-21 01:00:49,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391668421] [2021-11-21 01:00:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:49,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:49,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:49,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391668421] [2021-11-21 01:00:49,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391668421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:49,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:49,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:49,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16016914] [2021-11-21 01:00:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:49,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:49,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:49,758 INFO L87 Difference]: Start difference. First operand 822 states and 2363 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:50,072 INFO L93 Difference]: Finished difference Result 851 states and 2423 transitions. [2021-11-21 01:00:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:50,072 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:50,073 INFO L225 Difference]: With dead ends: 851 [2021-11-21 01:00:50,073 INFO L226 Difference]: Without dead ends: 840 [2021-11-21 01:00:50,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:50,074 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:50,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:00:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-21 01:00:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 820. [2021-11-21 01:00:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.879120879120879) internal successors, (2358), 819 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2358 transitions. [2021-11-21 01:00:50,084 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2358 transitions. Word has length 36 [2021-11-21 01:00:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:50,084 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2358 transitions. [2021-11-21 01:00:50,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2358 transitions. [2021-11-21 01:00:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:50,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:50,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:50,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-11-21 01:00:50,086 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash -627024020, now seen corresponding path program 63 times [2021-11-21 01:00:50,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:50,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992626555] [2021-11-21 01:00:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:50,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:50,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992626555] [2021-11-21 01:00:50,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992626555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:50,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:50,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:50,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374078903] [2021-11-21 01:00:50,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:50,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:50,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:50,401 INFO L87 Difference]: Start difference. First operand 820 states and 2358 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:50,724 INFO L93 Difference]: Finished difference Result 867 states and 2444 transitions. [2021-11-21 01:00:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:50,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:50,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:50,726 INFO L225 Difference]: With dead ends: 867 [2021-11-21 01:00:50,726 INFO L226 Difference]: Without dead ends: 853 [2021-11-21 01:00:50,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:50,726 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:50,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:00:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-21 01:00:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 823. [2021-11-21 01:00:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.8734793187347933) internal successors, (2362), 822 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2362 transitions. [2021-11-21 01:00:50,737 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2362 transitions. Word has length 36 [2021-11-21 01:00:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:50,737 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 2362 transitions. [2021-11-21 01:00:50,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2362 transitions. [2021-11-21 01:00:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:50,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:50,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:50,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-11-21 01:00:50,739 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1634560050, now seen corresponding path program 64 times [2021-11-21 01:00:50,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:50,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97246591] [2021-11-21 01:00:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:50,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:50,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:50,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97246591] [2021-11-21 01:00:50,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97246591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:50,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:50,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:50,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012988265] [2021-11-21 01:00:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:50,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:50,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:50,944 INFO L87 Difference]: Start difference. First operand 823 states and 2362 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:51,271 INFO L93 Difference]: Finished difference Result 854 states and 2425 transitions. [2021-11-21 01:00:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:51,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:51,273 INFO L225 Difference]: With dead ends: 854 [2021-11-21 01:00:51,273 INFO L226 Difference]: Without dead ends: 839 [2021-11-21 01:00:51,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:51,273 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:51,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-21 01:00:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 817. [2021-11-21 01:00:51,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.8762254901960786) internal successors, (2347), 816 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2347 transitions. [2021-11-21 01:00:51,283 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2347 transitions. Word has length 36 [2021-11-21 01:00:51,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:51,284 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2347 transitions. [2021-11-21 01:00:51,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:51,284 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2347 transitions. [2021-11-21 01:00:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:51,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:51,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:51,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-11-21 01:00:51,285 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1259478664, now seen corresponding path program 65 times [2021-11-21 01:00:51,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:51,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622366020] [2021-11-21 01:00:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:51,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:51,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622366020] [2021-11-21 01:00:51,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622366020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:51,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:51,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:51,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600142706] [2021-11-21 01:00:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:51,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:51,553 INFO L87 Difference]: Start difference. First operand 817 states and 2347 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:51,997 INFO L93 Difference]: Finished difference Result 944 states and 2621 transitions. [2021-11-21 01:00:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:51,999 INFO L225 Difference]: With dead ends: 944 [2021-11-21 01:00:51,999 INFO L226 Difference]: Without dead ends: 933 [2021-11-21 01:00:51,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:51,999 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:51,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-21 01:00:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 852. [2021-11-21 01:00:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 2.871915393654524) internal successors, (2444), 851 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2444 transitions. [2021-11-21 01:00:52,011 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2444 transitions. Word has length 36 [2021-11-21 01:00:52,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:52,011 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2444 transitions. [2021-11-21 01:00:52,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2444 transitions. [2021-11-21 01:00:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:52,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:52,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:52,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-11-21 01:00:52,012 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1257694726, now seen corresponding path program 66 times [2021-11-21 01:00:52,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:52,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463967801] [2021-11-21 01:00:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:52,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:52,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:52,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463967801] [2021-11-21 01:00:52,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463967801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:52,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:52,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:52,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16188230] [2021-11-21 01:00:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:52,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:52,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:52,250 INFO L87 Difference]: Start difference. First operand 852 states and 2444 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:52,675 INFO L93 Difference]: Finished difference Result 956 states and 2630 transitions. [2021-11-21 01:00:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:52,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:52,677 INFO L225 Difference]: With dead ends: 956 [2021-11-21 01:00:52,677 INFO L226 Difference]: Without dead ends: 937 [2021-11-21 01:00:52,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:52,677 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:52,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-21 01:00:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 847. [2021-11-21 01:00:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 2.8664302600472813) internal successors, (2425), 846 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2425 transitions. [2021-11-21 01:00:52,689 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2425 transitions. Word has length 36 [2021-11-21 01:00:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:52,689 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 2425 transitions. [2021-11-21 01:00:52,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2425 transitions. [2021-11-21 01:00:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:52,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:52,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:52,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-11-21 01:00:52,690 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:52,691 INFO L85 PathProgramCache]: Analyzing trace with hash 408050438, now seen corresponding path program 67 times [2021-11-21 01:00:52,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:52,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103269571] [2021-11-21 01:00:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:52,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:52,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:52,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103269571] [2021-11-21 01:00:52,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103269571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:52,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:52,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:52,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846086338] [2021-11-21 01:00:52,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:52,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:52,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:52,975 INFO L87 Difference]: Start difference. First operand 847 states and 2425 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:53,604 INFO L93 Difference]: Finished difference Result 987 states and 2683 transitions. [2021-11-21 01:00:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:53,606 INFO L225 Difference]: With dead ends: 987 [2021-11-21 01:00:53,606 INFO L226 Difference]: Without dead ends: 967 [2021-11-21 01:00:53,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:53,606 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:53,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:00:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-21 01:00:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 817. [2021-11-21 01:00:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.872549019607843) internal successors, (2344), 816 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2344 transitions. [2021-11-21 01:00:53,618 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2344 transitions. Word has length 36 [2021-11-21 01:00:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:53,618 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2344 transitions. [2021-11-21 01:00:53,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2344 transitions. [2021-11-21 01:00:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:53,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:53,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:53,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-11-21 01:00:53,619 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:53,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 279817066, now seen corresponding path program 68 times [2021-11-21 01:00:53,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:53,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587421356] [2021-11-21 01:00:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:53,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:53,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:53,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587421356] [2021-11-21 01:00:53,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587421356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:53,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:53,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:53,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706896828] [2021-11-21 01:00:53,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:53,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:53,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:53,996 INFO L87 Difference]: Start difference. First operand 817 states and 2344 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:54,362 INFO L93 Difference]: Finished difference Result 860 states and 2436 transitions. [2021-11-21 01:00:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:54,364 INFO L225 Difference]: With dead ends: 860 [2021-11-21 01:00:54,364 INFO L226 Difference]: Without dead ends: 849 [2021-11-21 01:00:54,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:54,364 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:54,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:54,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-21 01:00:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 831. [2021-11-21 01:00:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.8686746987951808) internal successors, (2381), 830 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2381 transitions. [2021-11-21 01:00:54,376 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2381 transitions. Word has length 36 [2021-11-21 01:00:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:54,376 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2381 transitions. [2021-11-21 01:00:54,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2381 transitions. [2021-11-21 01:00:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:54,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:54,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:54,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-11-21 01:00:54,379 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash -670632948, now seen corresponding path program 69 times [2021-11-21 01:00:54,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:54,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530512258] [2021-11-21 01:00:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:54,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:54,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:54,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530512258] [2021-11-21 01:00:54,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530512258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:54,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:54,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:54,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759409638] [2021-11-21 01:00:54,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:54,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:54,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:54,774 INFO L87 Difference]: Start difference. First operand 831 states and 2381 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:55,186 INFO L93 Difference]: Finished difference Result 858 states and 2430 transitions. [2021-11-21 01:00:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:55,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:55,188 INFO L225 Difference]: With dead ends: 858 [2021-11-21 01:00:55,188 INFO L226 Difference]: Without dead ends: 847 [2021-11-21 01:00:55,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:55,189 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:55,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-21 01:00:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 829. [2021-11-21 01:00:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 2.867149758454106) internal successors, (2374), 828 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 2374 transitions. [2021-11-21 01:00:55,206 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 2374 transitions. Word has length 36 [2021-11-21 01:00:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:55,207 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 2374 transitions. [2021-11-21 01:00:55,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 2374 transitions. [2021-11-21 01:00:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:55,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:55,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:55,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-11-21 01:00:55,209 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2000750606, now seen corresponding path program 70 times [2021-11-21 01:00:55,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:55,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310911678] [2021-11-21 01:00:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:55,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:55,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:55,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310911678] [2021-11-21 01:00:55,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310911678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:55,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:55,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:55,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044894191] [2021-11-21 01:00:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:55,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:00:55,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:00:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:55,621 INFO L87 Difference]: Start difference. First operand 829 states and 2374 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:56,054 INFO L93 Difference]: Finished difference Result 910 states and 2519 transitions. [2021-11-21 01:00:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:56,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:56,056 INFO L225 Difference]: With dead ends: 910 [2021-11-21 01:00:56,056 INFO L226 Difference]: Without dead ends: 890 [2021-11-21 01:00:56,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:56,057 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:56,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-21 01:00:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 799. [2021-11-21 01:00:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.8646616541353382) internal successors, (2286), 798 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 2286 transitions. [2021-11-21 01:00:56,068 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 2286 transitions. Word has length 36 [2021-11-21 01:00:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:56,068 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 2286 transitions. [2021-11-21 01:00:56,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 2286 transitions. [2021-11-21 01:00:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:56,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:56,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:56,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-11-21 01:00:56,069 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1081654584, now seen corresponding path program 71 times [2021-11-21 01:00:56,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:56,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634492873] [2021-11-21 01:00:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:56,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:56,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:56,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634492873] [2021-11-21 01:00:56,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634492873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:56,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:56,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:56,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090147387] [2021-11-21 01:00:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:56,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:56,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:56,437 INFO L87 Difference]: Start difference. First operand 799 states and 2286 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:56,902 INFO L93 Difference]: Finished difference Result 920 states and 2544 transitions. [2021-11-21 01:00:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:56,902 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:56,904 INFO L225 Difference]: With dead ends: 920 [2021-11-21 01:00:56,904 INFO L226 Difference]: Without dead ends: 909 [2021-11-21 01:00:56,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:00:56,904 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:56,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-11-21 01:00:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 816. [2021-11-21 01:00:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 2.845398773006135) internal successors, (2319), 815 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 2319 transitions. [2021-11-21 01:00:56,916 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 2319 transitions. Word has length 36 [2021-11-21 01:00:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:56,916 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 2319 transitions. [2021-11-21 01:00:56,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2319 transitions. [2021-11-21 01:00:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:56,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:56,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:56,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-11-21 01:00:56,917 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1083438522, now seen corresponding path program 72 times [2021-11-21 01:00:56,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:56,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535037822] [2021-11-21 01:00:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:56,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:57,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:57,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535037822] [2021-11-21 01:00:57,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535037822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:57,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:57,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:57,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017332138] [2021-11-21 01:00:57,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:57,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:57,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:57,162 INFO L87 Difference]: Start difference. First operand 816 states and 2319 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:57,639 INFO L93 Difference]: Finished difference Result 924 states and 2546 transitions. [2021-11-21 01:00:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:00:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:57,641 INFO L225 Difference]: With dead ends: 924 [2021-11-21 01:00:57,641 INFO L226 Difference]: Without dead ends: 905 [2021-11-21 01:00:57,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:00:57,642 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:57,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-21 01:00:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 811. [2021-11-21 01:00:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 810 states have (on average 2.8506172839506174) internal successors, (2309), 810 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 2309 transitions. [2021-11-21 01:00:57,653 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 2309 transitions. Word has length 36 [2021-11-21 01:00:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:57,653 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 2309 transitions. [2021-11-21 01:00:57,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 2309 transitions. [2021-11-21 01:00:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:57,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:57,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:57,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-11-21 01:00:57,654 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash -629479858, now seen corresponding path program 73 times [2021-11-21 01:00:57,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:57,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649847615] [2021-11-21 01:00:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:57,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:57,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649847615] [2021-11-21 01:00:57,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649847615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:57,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:57,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:00:57,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700095529] [2021-11-21 01:00:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:57,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:57,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:57,995 INFO L87 Difference]: Start difference. First operand 811 states and 2309 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:58,481 INFO L93 Difference]: Finished difference Result 919 states and 2536 transitions. [2021-11-21 01:00:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:00:58,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:58,483 INFO L225 Difference]: With dead ends: 919 [2021-11-21 01:00:58,483 INFO L226 Difference]: Without dead ends: 903 [2021-11-21 01:00:58,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:00:58,483 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:58,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-11-21 01:00:58,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 810. [2021-11-21 01:00:58,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 2.850432632880099) internal successors, (2306), 809 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2306 transitions. [2021-11-21 01:00:58,494 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2306 transitions. Word has length 36 [2021-11-21 01:00:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:58,494 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2306 transitions. [2021-11-21 01:00:58,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2306 transitions. [2021-11-21 01:00:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:58,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:58,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:58,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-11-21 01:00:58,495 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1858769710, now seen corresponding path program 74 times [2021-11-21 01:00:58,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:58,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461811458] [2021-11-21 01:00:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:58,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:00:58,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:58,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461811458] [2021-11-21 01:00:58,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461811458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:58,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:58,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:00:58,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322465305] [2021-11-21 01:00:58,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:58,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:00:58,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:58,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:00:58,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:58,866 INFO L87 Difference]: Start difference. First operand 810 states and 2306 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:59,327 INFO L93 Difference]: Finished difference Result 907 states and 2510 transitions. [2021-11-21 01:00:59,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:59,327 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:00:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:59,329 INFO L225 Difference]: With dead ends: 907 [2021-11-21 01:00:59,329 INFO L226 Difference]: Without dead ends: 896 [2021-11-21 01:00:59,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:00:59,329 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:59,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:00:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-11-21 01:00:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 845. [2021-11-21 01:00:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.8471563981042656) internal successors, (2403), 844 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2403 transitions. [2021-11-21 01:00:59,340 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2403 transitions. Word has length 36 [2021-11-21 01:00:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:59,341 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 2403 transitions. [2021-11-21 01:00:59,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:00:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2403 transitions. [2021-11-21 01:00:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:00:59,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:59,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:59,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-11-21 01:00:59,342 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:00:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1856985772, now seen corresponding path program 75 times [2021-11-21 01:00:59,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:59,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827906084] [2021-11-21 01:00:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:59,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:00:59,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:59,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827906084] [2021-11-21 01:00:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827906084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:00:59,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39203955] [2021-11-21 01:00:59,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:00:59,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:59,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:59,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:00:59,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:00:59,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:59,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-21 01:00:59,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:01:00,092 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-11-21 01:01:00,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2021-11-21 01:01:02,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:01:02,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 296 treesize of output 348 [2021-11-21 01:01:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:02,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:01:02,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39203955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:02,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:01:02,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2021-11-21 01:01:02,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228663610] [2021-11-21 01:01:02,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:02,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:01:02,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:01:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=351, Unknown=2, NotChecked=0, Total=420 [2021-11-21 01:01:02,707 INFO L87 Difference]: Start difference. First operand 845 states and 2403 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:03,099 INFO L93 Difference]: Finished difference Result 917 states and 2520 transitions. [2021-11-21 01:01:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:01:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:03,100 INFO L225 Difference]: With dead ends: 917 [2021-11-21 01:01:03,101 INFO L226 Difference]: Without dead ends: 910 [2021-11-21 01:01:03,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=141, Invalid=559, Unknown=2, NotChecked=0, Total=702 [2021-11-21 01:01:03,101 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:03,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 278 Invalid, 0 Unknown, 171 Unchecked, 0.2s Time] [2021-11-21 01:01:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-11-21 01:01:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 853. [2021-11-21 01:01:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.8333333333333335) internal successors, (2414), 852 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2414 transitions. [2021-11-21 01:01:03,113 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2414 transitions. Word has length 36 [2021-11-21 01:01:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:03,114 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 2414 transitions. [2021-11-21 01:01:03,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2414 transitions. [2021-11-21 01:01:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:03,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:03,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:03,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:01:03,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:01:03,316 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1449224322, now seen corresponding path program 76 times [2021-11-21 01:01:03,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:03,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477730608] [2021-11-21 01:01:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:03,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:03,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:03,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477730608] [2021-11-21 01:01:03,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477730608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:03,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:03,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:01:03,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455776480] [2021-11-21 01:01:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:03,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:01:03,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:01:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:01:03,729 INFO L87 Difference]: Start difference. First operand 853 states and 2414 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:04,196 INFO L93 Difference]: Finished difference Result 926 states and 2529 transitions. [2021-11-21 01:01:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:01:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:04,198 INFO L225 Difference]: With dead ends: 926 [2021-11-21 01:01:04,198 INFO L226 Difference]: Without dead ends: 899 [2021-11-21 01:01:04,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:04,198 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:04,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:01:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-21 01:01:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 840. [2021-11-21 01:01:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 2.8414779499404053) internal successors, (2384), 839 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2384 transitions. [2021-11-21 01:01:04,210 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2384 transitions. Word has length 36 [2021-11-21 01:01:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:04,211 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 2384 transitions. [2021-11-21 01:01:04,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2384 transitions. [2021-11-21 01:01:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:04,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:04,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:04,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-11-21 01:01:04,212 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash -191240608, now seen corresponding path program 77 times [2021-11-21 01:01:04,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618955003] [2021-11-21 01:01:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:04,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:04,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:04,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618955003] [2021-11-21 01:01:04,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618955003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:04,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:04,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:01:04,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370473222] [2021-11-21 01:01:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:04,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:01:04,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:01:04,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:01:04,633 INFO L87 Difference]: Start difference. First operand 840 states and 2384 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:05,286 INFO L93 Difference]: Finished difference Result 926 states and 2522 transitions. [2021-11-21 01:01:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:01:05,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:05,288 INFO L225 Difference]: With dead ends: 926 [2021-11-21 01:01:05,288 INFO L226 Difference]: Without dead ends: 900 [2021-11-21 01:01:05,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:05,288 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:05,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:01:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-11-21 01:01:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 796. [2021-11-21 01:01:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.8553459119496853) internal successors, (2270), 795 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2270 transitions. [2021-11-21 01:01:05,299 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2270 transitions. Word has length 36 [2021-11-21 01:01:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:05,299 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2270 transitions. [2021-11-21 01:01:05,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2270 transitions. [2021-11-21 01:01:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:05,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:05,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:05,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-11-21 01:01:05,300 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -711665104, now seen corresponding path program 5 times [2021-11-21 01:01:05,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:05,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722359525] [2021-11-21 01:01:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:05,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:05,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:05,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722359525] [2021-11-21 01:01:05,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722359525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:05,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:05,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:01:05,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891336552] [2021-11-21 01:01:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:05,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:01:05,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:01:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:01:05,416 INFO L87 Difference]: Start difference. First operand 796 states and 2270 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:05,670 INFO L93 Difference]: Finished difference Result 1111 states and 3087 transitions. [2021-11-21 01:01:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:01:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:05,673 INFO L225 Difference]: With dead ends: 1111 [2021-11-21 01:01:05,674 INFO L226 Difference]: Without dead ends: 1111 [2021-11-21 01:01:05,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:01:05,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:05,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:01:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-21 01:01:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 797. [2021-11-21 01:01:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 2.8467336683417086) internal successors, (2266), 796 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2266 transitions. [2021-11-21 01:01:05,696 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2266 transitions. Word has length 36 [2021-11-21 01:01:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:05,696 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 2266 transitions. [2021-11-21 01:01:05,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2266 transitions. [2021-11-21 01:01:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:05,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:05,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:05,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-11-21 01:01:05,699 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1802330948, now seen corresponding path program 6 times [2021-11-21 01:01:05,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:05,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355504870] [2021-11-21 01:01:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:05,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:05,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:05,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355504870] [2021-11-21 01:01:05,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355504870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:05,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:05,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:01:05,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689820910] [2021-11-21 01:01:05,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:05,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:01:05,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:01:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:01:05,852 INFO L87 Difference]: Start difference. First operand 797 states and 2266 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:06,088 INFO L93 Difference]: Finished difference Result 935 states and 2608 transitions. [2021-11-21 01:01:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:01:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:06,090 INFO L225 Difference]: With dead ends: 935 [2021-11-21 01:01:06,090 INFO L226 Difference]: Without dead ends: 920 [2021-11-21 01:01:06,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:01:06,091 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:06,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 0 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:01:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-21 01:01:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 777. [2021-11-21 01:01:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 776 states have (on average 2.829896907216495) internal successors, (2196), 776 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2196 transitions. [2021-11-21 01:01:06,112 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2196 transitions. Word has length 36 [2021-11-21 01:01:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:06,113 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 2196 transitions. [2021-11-21 01:01:06,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2196 transitions. [2021-11-21 01:01:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:06,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:06,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:06,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-11-21 01:01:06,115 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1183595392, now seen corresponding path program 6 times [2021-11-21 01:01:06,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:06,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94828148] [2021-11-21 01:01:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:06,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:06,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94828148] [2021-11-21 01:01:06,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94828148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:06,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:06,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:01:06,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373449801] [2021-11-21 01:01:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:06,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:01:06,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:01:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:01:06,242 INFO L87 Difference]: Start difference. First operand 777 states and 2196 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:06,476 INFO L93 Difference]: Finished difference Result 927 states and 2534 transitions. [2021-11-21 01:01:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:01:06,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:06,478 INFO L225 Difference]: With dead ends: 927 [2021-11-21 01:01:06,478 INFO L226 Difference]: Without dead ends: 839 [2021-11-21 01:01:06,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:06,479 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:06,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:01:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-21 01:01:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 765. [2021-11-21 01:01:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 2.8337696335078535) internal successors, (2165), 764 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 2165 transitions. [2021-11-21 01:01:06,497 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 2165 transitions. Word has length 36 [2021-11-21 01:01:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:06,498 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 2165 transitions. [2021-11-21 01:01:06,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 2165 transitions. [2021-11-21 01:01:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:06,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:06,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:06,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-11-21 01:01:06,500 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1110019162, now seen corresponding path program 132 times [2021-11-21 01:01:06,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:06,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845375385] [2021-11-21 01:01:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:06,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:07,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:07,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845375385] [2021-11-21 01:01:07,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845375385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:07,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:07,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:01:07,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119989985] [2021-11-21 01:01:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:07,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:01:07,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:01:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:07,049 INFO L87 Difference]: Start difference. First operand 765 states and 2165 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:10,833 INFO L93 Difference]: Finished difference Result 2221 states and 5902 transitions. [2021-11-21 01:01:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 01:01:10,833 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:10,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:10,836 INFO L225 Difference]: With dead ends: 2221 [2021-11-21 01:01:10,836 INFO L226 Difference]: Without dead ends: 2214 [2021-11-21 01:01:10,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2021-11-21 01:01:10,837 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 362 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:10,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 0 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:01:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-11-21 01:01:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 783. [2021-11-21 01:01:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 2.842710997442455) internal successors, (2223), 782 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 2223 transitions. [2021-11-21 01:01:10,855 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 2223 transitions. Word has length 36 [2021-11-21 01:01:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:10,856 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 2223 transitions. [2021-11-21 01:01:10,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 2223 transitions. [2021-11-21 01:01:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:10,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:10,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:10,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-11-21 01:01:10,857 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1092096684, now seen corresponding path program 133 times [2021-11-21 01:01:10,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:10,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436609837] [2021-11-21 01:01:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:10,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:11,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:11,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436609837] [2021-11-21 01:01:11,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436609837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:11,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:11,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:11,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805907836] [2021-11-21 01:01:11,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:11,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:11,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:11,154 INFO L87 Difference]: Start difference. First operand 783 states and 2223 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:12,303 INFO L93 Difference]: Finished difference Result 2178 states and 5818 transitions. [2021-11-21 01:01:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:12,306 INFO L225 Difference]: With dead ends: 2178 [2021-11-21 01:01:12,306 INFO L226 Difference]: Without dead ends: 2171 [2021-11-21 01:01:12,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:12,307 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:12,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-11-21 01:01:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 798. [2021-11-21 01:01:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.8444165621079045) internal successors, (2267), 797 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2267 transitions. [2021-11-21 01:01:12,325 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2267 transitions. Word has length 36 [2021-11-21 01:01:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2267 transitions. [2021-11-21 01:01:12,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2267 transitions. [2021-11-21 01:01:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:12,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:12,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:12,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-11-21 01:01:12,327 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash 204826242, now seen corresponding path program 134 times [2021-11-21 01:01:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428084795] [2021-11-21 01:01:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:12,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:12,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:12,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428084795] [2021-11-21 01:01:12,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428084795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:12,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:12,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:12,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265148658] [2021-11-21 01:01:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:12,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:12,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:12,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:12,787 INFO L87 Difference]: Start difference. First operand 798 states and 2267 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:14,183 INFO L93 Difference]: Finished difference Result 2142 states and 5750 transitions. [2021-11-21 01:01:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:14,184 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:14,187 INFO L225 Difference]: With dead ends: 2142 [2021-11-21 01:01:14,187 INFO L226 Difference]: Without dead ends: 2128 [2021-11-21 01:01:14,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:14,187 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 297 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:14,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 0 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:01:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-21 01:01:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 778. [2021-11-21 01:01:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.844272844272844) internal successors, (2210), 777 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2210 transitions. [2021-11-21 01:01:14,206 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2210 transitions. Word has length 36 [2021-11-21 01:01:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:14,206 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2210 transitions. [2021-11-21 01:01:14,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2210 transitions. [2021-11-21 01:01:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:14,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:14,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:14,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-11-21 01:01:14,207 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1878450682, now seen corresponding path program 135 times [2021-11-21 01:01:14,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856339533] [2021-11-21 01:01:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:14,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:14,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:14,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856339533] [2021-11-21 01:01:14,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856339533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:14,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:14,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:01:14,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726845675] [2021-11-21 01:01:14,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:14,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:01:14,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:01:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:01:14,511 INFO L87 Difference]: Start difference. First operand 778 states and 2210 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:15,548 INFO L93 Difference]: Finished difference Result 2173 states and 5805 transitions. [2021-11-21 01:01:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:15,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:15,552 INFO L225 Difference]: With dead ends: 2173 [2021-11-21 01:01:15,552 INFO L226 Difference]: Without dead ends: 2166 [2021-11-21 01:01:15,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:01:15,552 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 333 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:15,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-11-21 01:01:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 796. [2021-11-21 01:01:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.8440251572327044) internal successors, (2261), 795 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2261 transitions. [2021-11-21 01:01:15,592 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2261 transitions. Word has length 36 [2021-11-21 01:01:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:15,592 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2261 transitions. [2021-11-21 01:01:15,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2261 transitions. [2021-11-21 01:01:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:15,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:15,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:15,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-11-21 01:01:15,595 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1119593688, now seen corresponding path program 136 times [2021-11-21 01:01:15,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:15,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612775564] [2021-11-21 01:01:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:15,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:16,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:16,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612775564] [2021-11-21 01:01:16,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612775564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:16,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:16,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:01:16,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525571902] [2021-11-21 01:01:16,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:16,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:01:16,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:01:16,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:01:16,078 INFO L87 Difference]: Start difference. First operand 796 states and 2261 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:18,833 INFO L93 Difference]: Finished difference Result 2277 states and 6103 transitions. [2021-11-21 01:01:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:01:18,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:18,836 INFO L225 Difference]: With dead ends: 2277 [2021-11-21 01:01:18,837 INFO L226 Difference]: Without dead ends: 2263 [2021-11-21 01:01:18,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=625, Invalid=1445, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 01:01:18,837 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:18,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:01:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-21 01:01:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 786. [2021-11-21 01:01:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 2.8471337579617835) internal successors, (2235), 785 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2235 transitions. [2021-11-21 01:01:18,856 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2235 transitions. Word has length 36 [2021-11-21 01:01:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:18,856 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 2235 transitions. [2021-11-21 01:01:18,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2235 transitions. [2021-11-21 01:01:18,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:18,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:18,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:18,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-11-21 01:01:18,857 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:18,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash 253952386, now seen corresponding path program 137 times [2021-11-21 01:01:18,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627597749] [2021-11-21 01:01:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:18,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:19,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627597749] [2021-11-21 01:01:19,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627597749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:19,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:19,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-21 01:01:19,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727290653] [2021-11-21 01:01:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:19,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:01:19,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:01:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:01:19,471 INFO L87 Difference]: Start difference. First operand 786 states and 2235 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:21,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:21,632 INFO L93 Difference]: Finished difference Result 2127 states and 5711 transitions. [2021-11-21 01:01:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:01:21,632 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:21,635 INFO L225 Difference]: With dead ends: 2127 [2021-11-21 01:01:21,635 INFO L226 Difference]: Without dead ends: 2112 [2021-11-21 01:01:21,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 01:01:21,636 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 514 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:21,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 0 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:01:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-11-21 01:01:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 778. [2021-11-21 01:01:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.844272844272844) internal successors, (2210), 777 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2210 transitions. [2021-11-21 01:01:21,654 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2210 transitions. Word has length 36 [2021-11-21 01:01:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:21,654 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2210 transitions. [2021-11-21 01:01:21,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2210 transitions. [2021-11-21 01:01:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:21,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:21,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:21,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-11-21 01:01:21,656 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2109137798, now seen corresponding path program 138 times [2021-11-21 01:01:21,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:21,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915667947] [2021-11-21 01:01:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:21,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:22,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:22,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915667947] [2021-11-21 01:01:22,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915667947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:22,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:22,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:01:22,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912260217] [2021-11-21 01:01:22,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:22,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:01:22,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:01:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:22,115 INFO L87 Difference]: Start difference. First operand 778 states and 2210 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:26,159 INFO L93 Difference]: Finished difference Result 2349 states and 6186 transitions. [2021-11-21 01:01:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 01:01:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:26,163 INFO L225 Difference]: With dead ends: 2349 [2021-11-21 01:01:26,163 INFO L226 Difference]: Without dead ends: 2342 [2021-11-21 01:01:26,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=651, Invalid=1511, Unknown=0, NotChecked=0, Total=2162 [2021-11-21 01:01:26,163 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 437 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:26,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 0 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:01:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-11-21 01:01:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 780. [2021-11-21 01:01:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.845956354300385) internal successors, (2217), 779 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2217 transitions. [2021-11-21 01:01:26,182 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2217 transitions. Word has length 36 [2021-11-21 01:01:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:26,183 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 2217 transitions. [2021-11-21 01:01:26,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2217 transitions. [2021-11-21 01:01:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:26,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:26,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:26,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-11-21 01:01:26,184 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash 278114922, now seen corresponding path program 139 times [2021-11-21 01:01:26,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:26,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651936533] [2021-11-21 01:01:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:26,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:26,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651936533] [2021-11-21 01:01:26,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651936533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:26,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:26,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:01:26,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719362103] [2021-11-21 01:01:26,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:26,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:01:26,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:01:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:26,679 INFO L87 Difference]: Start difference. First operand 780 states and 2217 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:31,265 INFO L93 Difference]: Finished difference Result 2439 states and 6453 transitions. [2021-11-21 01:01:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-21 01:01:31,265 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:31,268 INFO L225 Difference]: With dead ends: 2439 [2021-11-21 01:01:31,269 INFO L226 Difference]: Without dead ends: 2432 [2021-11-21 01:01:31,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=692, Invalid=1660, Unknown=0, NotChecked=0, Total=2352 [2021-11-21 01:01:31,269 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 424 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:31,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 0 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:01:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-11-21 01:01:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 784. [2021-11-21 01:01:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 2.8492975734355044) internal successors, (2231), 783 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2231 transitions. [2021-11-21 01:01:31,289 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2231 transitions. Word has length 36 [2021-11-21 01:01:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:31,289 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2231 transitions. [2021-11-21 01:01:31,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2231 transitions. [2021-11-21 01:01:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:31,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:31,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:31,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-11-21 01:01:31,290 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:31,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1715609478, now seen corresponding path program 140 times [2021-11-21 01:01:31,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:31,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885507721] [2021-11-21 01:01:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:31,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:31,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885507721] [2021-11-21 01:01:31,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885507721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:31,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:31,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:31,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580391021] [2021-11-21 01:01:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:31,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:31,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:31,647 INFO L87 Difference]: Start difference. First operand 784 states and 2231 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:32,791 INFO L93 Difference]: Finished difference Result 2382 states and 6318 transitions. [2021-11-21 01:01:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:32,795 INFO L225 Difference]: With dead ends: 2382 [2021-11-21 01:01:32,795 INFO L226 Difference]: Without dead ends: 2375 [2021-11-21 01:01:32,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:32,796 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 283 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:32,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 0 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:01:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-21 01:01:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 808. [2021-11-21 01:01:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 2.8562577447335813) internal successors, (2305), 807 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2305 transitions. [2021-11-21 01:01:32,814 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2305 transitions. Word has length 36 [2021-11-21 01:01:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:32,815 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2305 transitions. [2021-11-21 01:01:32,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2305 transitions. [2021-11-21 01:01:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:32,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:32,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:32,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-11-21 01:01:32,816 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:32,816 INFO L85 PathProgramCache]: Analyzing trace with hash 786566720, now seen corresponding path program 141 times [2021-11-21 01:01:32,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:32,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504623251] [2021-11-21 01:01:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:32,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:33,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:33,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504623251] [2021-11-21 01:01:33,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504623251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:33,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:33,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:33,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199415725] [2021-11-21 01:01:33,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:33,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:33,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:33,220 INFO L87 Difference]: Start difference. First operand 808 states and 2305 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:34,420 INFO L93 Difference]: Finished difference Result 2420 states and 6388 transitions. [2021-11-21 01:01:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:34,424 INFO L225 Difference]: With dead ends: 2420 [2021-11-21 01:01:34,424 INFO L226 Difference]: Without dead ends: 2413 [2021-11-21 01:01:34,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:34,424 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 310 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:34,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 0 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:01:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-21 01:01:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 784. [2021-11-21 01:01:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 2.84418901660281) internal successors, (2227), 783 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2227 transitions. [2021-11-21 01:01:34,443 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2227 transitions. Word has length 36 [2021-11-21 01:01:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:34,443 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2227 transitions. [2021-11-21 01:01:34,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2227 transitions. [2021-11-21 01:01:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:34,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:34,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:34,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-11-21 01:01:34,444 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 35613888, now seen corresponding path program 142 times [2021-11-21 01:01:34,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136083164] [2021-11-21 01:01:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:34,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:34,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136083164] [2021-11-21 01:01:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136083164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:34,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:34,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:01:34,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179674308] [2021-11-21 01:01:34,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:34,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:01:34,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:01:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:34,848 INFO L87 Difference]: Start difference. First operand 784 states and 2227 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:37,906 INFO L93 Difference]: Finished difference Result 2610 states and 6869 transitions. [2021-11-21 01:01:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 01:01:37,907 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:37,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:37,910 INFO L225 Difference]: With dead ends: 2610 [2021-11-21 01:01:37,910 INFO L226 Difference]: Without dead ends: 2603 [2021-11-21 01:01:37,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=652, Invalid=1510, Unknown=0, NotChecked=0, Total=2162 [2021-11-21 01:01:37,911 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 449 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:37,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 0 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:01:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-11-21 01:01:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 808. [2021-11-21 01:01:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 2.866171003717472) internal successors, (2313), 807 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2313 transitions. [2021-11-21 01:01:37,934 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2313 transitions. Word has length 36 [2021-11-21 01:01:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:37,934 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2313 transitions. [2021-11-21 01:01:37,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2313 transitions. [2021-11-21 01:01:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:37,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:37,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:37,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-11-21 01:01:37,935 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1332536814, now seen corresponding path program 143 times [2021-11-21 01:01:37,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:37,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966185928] [2021-11-21 01:01:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:37,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:38,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966185928] [2021-11-21 01:01:38,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966185928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:38,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:38,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:38,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083380994] [2021-11-21 01:01:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:38,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:38,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:38,213 INFO L87 Difference]: Start difference. First operand 808 states and 2313 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:39,293 INFO L93 Difference]: Finished difference Result 2644 states and 7151 transitions. [2021-11-21 01:01:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:39,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:39,307 INFO L225 Difference]: With dead ends: 2644 [2021-11-21 01:01:39,307 INFO L226 Difference]: Without dead ends: 2630 [2021-11-21 01:01:39,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:39,308 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 310 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:39,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 0 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-11-21 01:01:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 835. [2021-11-21 01:01:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.8968824940047964) internal successors, (2416), 834 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2416 transitions. [2021-11-21 01:01:39,329 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2416 transitions. Word has length 36 [2021-11-21 01:01:39,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:39,329 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2416 transitions. [2021-11-21 01:01:39,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2416 transitions. [2021-11-21 01:01:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:39,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:39,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:39,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-11-21 01:01:39,330 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:39,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1555994816, now seen corresponding path program 144 times [2021-11-21 01:01:39,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071109944] [2021-11-21 01:01:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:39,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:39,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:39,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071109944] [2021-11-21 01:01:39,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071109944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:39,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:39,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:01:39,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433667750] [2021-11-21 01:01:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:39,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:01:39,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:01:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:01:39,751 INFO L87 Difference]: Start difference. First operand 835 states and 2416 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:43,807 INFO L93 Difference]: Finished difference Result 2712 states and 7246 transitions. [2021-11-21 01:01:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-21 01:01:43,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:43,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:43,811 INFO L225 Difference]: With dead ends: 2712 [2021-11-21 01:01:43,811 INFO L226 Difference]: Without dead ends: 2705 [2021-11-21 01:01:43,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=744, Invalid=1806, Unknown=0, NotChecked=0, Total=2550 [2021-11-21 01:01:43,811 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 408 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:43,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 0 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 01:01:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2021-11-21 01:01:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 839. [2021-11-21 01:01:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 2.899761336515513) internal successors, (2430), 838 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 2430 transitions. [2021-11-21 01:01:43,850 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 2430 transitions. Word has length 36 [2021-11-21 01:01:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:43,850 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 2430 transitions. [2021-11-21 01:01:43,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 2430 transitions. [2021-11-21 01:01:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:43,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:43,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:43,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-11-21 01:01:43,852 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1393808896, now seen corresponding path program 145 times [2021-11-21 01:01:43,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:43,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305688124] [2021-11-21 01:01:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:43,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:44,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:44,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305688124] [2021-11-21 01:01:44,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305688124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:44,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:44,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:44,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200717373] [2021-11-21 01:01:44,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:44,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:44,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:44,170 INFO L87 Difference]: Start difference. First operand 839 states and 2430 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:45,117 INFO L93 Difference]: Finished difference Result 2691 states and 7240 transitions. [2021-11-21 01:01:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:45,121 INFO L225 Difference]: With dead ends: 2691 [2021-11-21 01:01:45,121 INFO L226 Difference]: Without dead ends: 2684 [2021-11-21 01:01:45,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:45,122 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 363 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:45,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 0 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-11-21 01:01:45,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 857. [2021-11-21 01:01:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.9053738317757007) internal successors, (2487), 856 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2487 transitions. [2021-11-21 01:01:45,142 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2487 transitions. Word has length 36 [2021-11-21 01:01:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:45,143 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 2487 transitions. [2021-11-21 01:01:45,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2487 transitions. [2021-11-21 01:01:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:45,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:45,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:45,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-11-21 01:01:45,144 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1972115642, now seen corresponding path program 146 times [2021-11-21 01:01:45,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:45,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573227992] [2021-11-21 01:01:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:45,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:45,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:45,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573227992] [2021-11-21 01:01:45,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573227992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:45,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:45,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:45,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539229302] [2021-11-21 01:01:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:45,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:45,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:45,501 INFO L87 Difference]: Start difference. First operand 857 states and 2487 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:46,453 INFO L93 Difference]: Finished difference Result 2713 states and 7286 transitions. [2021-11-21 01:01:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:46,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:46,457 INFO L225 Difference]: With dead ends: 2713 [2021-11-21 01:01:46,457 INFO L226 Difference]: Without dead ends: 2706 [2021-11-21 01:01:46,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:46,457 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:46,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-11-21 01:01:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 835. [2021-11-21 01:01:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.8968824940047964) internal successors, (2416), 834 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2416 transitions. [2021-11-21 01:01:46,479 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2416 transitions. Word has length 36 [2021-11-21 01:01:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:46,479 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2416 transitions. [2021-11-21 01:01:46,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2416 transitions. [2021-11-21 01:01:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:46,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:46,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:46,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-11-21 01:01:46,480 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1349772206, now seen corresponding path program 147 times [2021-11-21 01:01:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:46,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138316559] [2021-11-21 01:01:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:46,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:46,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:46,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138316559] [2021-11-21 01:01:46,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138316559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:46,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:46,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:01:46,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541212601] [2021-11-21 01:01:46,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:01:46,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:01:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:01:46,825 INFO L87 Difference]: Start difference. First operand 835 states and 2416 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:47,758 INFO L93 Difference]: Finished difference Result 2514 states and 6833 transitions. [2021-11-21 01:01:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:01:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:47,762 INFO L225 Difference]: With dead ends: 2514 [2021-11-21 01:01:47,762 INFO L226 Difference]: Without dead ends: 2500 [2021-11-21 01:01:47,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2021-11-21 01:01:47,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:47,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:47,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-11-21 01:01:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 844. [2021-11-21 01:01:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.8908659549228943) internal successors, (2437), 843 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2437 transitions. [2021-11-21 01:01:47,784 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2437 transitions. Word has length 36 [2021-11-21 01:01:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:47,784 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2437 transitions. [2021-11-21 01:01:47,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2437 transitions. [2021-11-21 01:01:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:47,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:47,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:47,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-11-21 01:01:47,786 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -591392850, now seen corresponding path program 148 times [2021-11-21 01:01:47,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:47,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15823525] [2021-11-21 01:01:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:47,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:48,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15823525] [2021-11-21 01:01:48,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15823525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:48,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:48,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:01:48,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156442715] [2021-11-21 01:01:48,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:48,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:01:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:01:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:01:48,174 INFO L87 Difference]: Start difference. First operand 844 states and 2437 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:49,276 INFO L93 Difference]: Finished difference Result 2522 states and 6841 transitions. [2021-11-21 01:01:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:49,280 INFO L225 Difference]: With dead ends: 2522 [2021-11-21 01:01:49,280 INFO L226 Difference]: Without dead ends: 2515 [2021-11-21 01:01:49,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:01:49,281 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 301 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:49,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 0 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2021-11-21 01:01:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 823. [2021-11-21 01:01:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.872262773722628) internal successors, (2361), 822 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2361 transitions. [2021-11-21 01:01:49,300 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2361 transitions. Word has length 36 [2021-11-21 01:01:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:49,301 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 2361 transitions. [2021-11-21 01:01:49,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2361 transitions. [2021-11-21 01:01:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:49,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:49,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:49,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-11-21 01:01:49,302 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1028004506, now seen corresponding path program 149 times [2021-11-21 01:01:49,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001566415] [2021-11-21 01:01:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:49,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:49,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:49,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001566415] [2021-11-21 01:01:49,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001566415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:49,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:49,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:01:49,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714845667] [2021-11-21 01:01:49,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:49,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:01:49,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:49,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:01:49,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:01:49,653 INFO L87 Difference]: Start difference. First operand 823 states and 2361 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:50,715 INFO L93 Difference]: Finished difference Result 2695 states and 7267 transitions. [2021-11-21 01:01:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:50,719 INFO L225 Difference]: With dead ends: 2695 [2021-11-21 01:01:50,720 INFO L226 Difference]: Without dead ends: 2688 [2021-11-21 01:01:50,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:01:50,720 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 393 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:50,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 0 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-11-21 01:01:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 835. [2021-11-21 01:01:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.884892086330935) internal successors, (2406), 834 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2406 transitions. [2021-11-21 01:01:50,743 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2406 transitions. Word has length 36 [2021-11-21 01:01:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:50,743 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2406 transitions. [2021-11-21 01:01:50,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2406 transitions. [2021-11-21 01:01:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:50,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:50,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:50,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-11-21 01:01:50,745 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 268918420, now seen corresponding path program 150 times [2021-11-21 01:01:50,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:50,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181302069] [2021-11-21 01:01:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:50,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:51,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:51,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181302069] [2021-11-21 01:01:51,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181302069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:51,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:51,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:01:51,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800924968] [2021-11-21 01:01:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:51,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:01:51,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:51,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:01:51,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:01:51,266 INFO L87 Difference]: Start difference. First operand 835 states and 2406 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:53,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:53,253 INFO L93 Difference]: Finished difference Result 2508 states and 6748 transitions. [2021-11-21 01:01:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:01:53,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:53,257 INFO L225 Difference]: With dead ends: 2508 [2021-11-21 01:01:53,257 INFO L226 Difference]: Without dead ends: 2494 [2021-11-21 01:01:53,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=390, Invalid=870, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 01:01:53,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 499 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:53,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 0 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:01:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2021-11-21 01:01:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 845. [2021-11-21 01:01:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.895734597156398) internal successors, (2444), 844 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2444 transitions. [2021-11-21 01:01:53,280 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2444 transitions. Word has length 36 [2021-11-21 01:01:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:53,280 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 2444 transitions. [2021-11-21 01:01:53,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2444 transitions. [2021-11-21 01:01:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:53,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:53,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:53,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-11-21 01:01:53,281 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1642464494, now seen corresponding path program 151 times [2021-11-21 01:01:53,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:53,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652841429] [2021-11-21 01:01:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:53,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:53,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652841429] [2021-11-21 01:01:53,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652841429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:53,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:53,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:01:53,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360706181] [2021-11-21 01:01:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:53,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:01:53,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:01:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:01:53,643 INFO L87 Difference]: Start difference. First operand 845 states and 2444 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:54,636 INFO L93 Difference]: Finished difference Result 2627 states and 7090 transitions. [2021-11-21 01:01:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:54,640 INFO L225 Difference]: With dead ends: 2627 [2021-11-21 01:01:54,640 INFO L226 Difference]: Without dead ends: 2612 [2021-11-21 01:01:54,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:01:54,640 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 353 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:54,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 0 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:01:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2021-11-21 01:01:54,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 817. [2021-11-21 01:01:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.886029411764706) internal successors, (2355), 816 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2355 transitions. [2021-11-21 01:01:54,661 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2355 transitions. Word has length 36 [2021-11-21 01:01:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:54,661 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2355 transitions. [2021-11-21 01:01:54,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2355 transitions. [2021-11-21 01:01:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:54,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:54,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:54,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-11-21 01:01:54,662 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 614409632, now seen corresponding path program 152 times [2021-11-21 01:01:54,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:54,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615096382] [2021-11-21 01:01:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:54,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:54,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:54,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615096382] [2021-11-21 01:01:54,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615096382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:54,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:54,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:01:54,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634141611] [2021-11-21 01:01:54,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:54,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:01:54,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:01:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:01:54,963 INFO L87 Difference]: Start difference. First operand 817 states and 2355 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:55,880 INFO L93 Difference]: Finished difference Result 2667 states and 7146 transitions. [2021-11-21 01:01:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:01:55,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:55,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:55,884 INFO L225 Difference]: With dead ends: 2667 [2021-11-21 01:01:55,884 INFO L226 Difference]: Without dead ends: 2660 [2021-11-21 01:01:55,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:01:55,884 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 353 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:55,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 0 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:01:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-11-21 01:01:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 835. [2021-11-21 01:01:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.8920863309352516) internal successors, (2412), 834 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2412 transitions. [2021-11-21 01:01:55,903 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2412 transitions. Word has length 36 [2021-11-21 01:01:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2412 transitions. [2021-11-21 01:01:55,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2412 transitions. [2021-11-21 01:01:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:55,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:55,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:55,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-11-21 01:01:55,905 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:55,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:55,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1959573216, now seen corresponding path program 153 times [2021-11-21 01:01:55,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:55,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098481556] [2021-11-21 01:01:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:55,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:01:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:01:56,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:01:56,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098481556] [2021-11-21 01:01:56,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098481556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:01:56,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:01:56,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:01:56,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81532345] [2021-11-21 01:01:56,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:01:56,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:01:56,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:01:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:01:56,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:01:56,462 INFO L87 Difference]: Start difference. First operand 835 states and 2412 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:59,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:01:59,728 INFO L93 Difference]: Finished difference Result 2510 states and 6787 transitions. [2021-11-21 01:01:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-21 01:01:59,729 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:01:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:01:59,732 INFO L225 Difference]: With dead ends: 2510 [2021-11-21 01:01:59,732 INFO L226 Difference]: Without dead ends: 2503 [2021-11-21 01:01:59,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=582, Invalid=1310, Unknown=0, NotChecked=0, Total=1892 [2021-11-21 01:01:59,733 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 397 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:01:59,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 0 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:01:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-11-21 01:01:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 843. [2021-11-21 01:01:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.9049881235154396) internal successors, (2446), 842 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2446 transitions. [2021-11-21 01:01:59,755 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2446 transitions. Word has length 36 [2021-11-21 01:01:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:01:59,755 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2446 transitions. [2021-11-21 01:01:59,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:01:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2446 transitions. [2021-11-21 01:01:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:01:59,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:01:59,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:01:59,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-11-21 01:01:59,757 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:01:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:01:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2003609906, now seen corresponding path program 154 times [2021-11-21 01:01:59,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:01:59,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292409798] [2021-11-21 01:01:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:01:59,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:01:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:00,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:00,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292409798] [2021-11-21 01:02:00,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292409798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:00,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:00,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:02:00,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980734297] [2021-11-21 01:02:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:00,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:02:00,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:00,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:02:00,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:02:00,295 INFO L87 Difference]: Start difference. First operand 843 states and 2446 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:02,437 INFO L93 Difference]: Finished difference Result 2366 states and 6447 transitions. [2021-11-21 01:02:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:02:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:02,441 INFO L225 Difference]: With dead ends: 2366 [2021-11-21 01:02:02,441 INFO L226 Difference]: Without dead ends: 2352 [2021-11-21 01:02:02,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=391, Invalid=869, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 01:02:02,441 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 396 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:02,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 0 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:02:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-11-21 01:02:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 849. [2021-11-21 01:02:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.911556603773585) internal successors, (2469), 848 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2469 transitions. [2021-11-21 01:02:02,462 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2469 transitions. Word has length 36 [2021-11-21 01:02:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:02,463 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2469 transitions. [2021-11-21 01:02:02,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2469 transitions. [2021-11-21 01:02:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:02,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:02,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:02,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-11-21 01:02:02,464 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1532978034, now seen corresponding path program 155 times [2021-11-21 01:02:02,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:02,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95909883] [2021-11-21 01:02:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:02,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:02,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:02,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95909883] [2021-11-21 01:02:02,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95909883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:02,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:02,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:02,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314379007] [2021-11-21 01:02:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:02,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:02,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:02,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:02,857 INFO L87 Difference]: Start difference. First operand 849 states and 2469 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:04,048 INFO L93 Difference]: Finished difference Result 2530 states and 6868 transitions. [2021-11-21 01:02:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:02:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:04,051 INFO L225 Difference]: With dead ends: 2530 [2021-11-21 01:02:04,051 INFO L226 Difference]: Without dead ends: 2523 [2021-11-21 01:02:04,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:02:04,052 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 337 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:04,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:02:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2021-11-21 01:02:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 858. [2021-11-21 01:02:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 2.9089848308051343) internal successors, (2493), 857 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2493 transitions. [2021-11-21 01:02:04,071 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2493 transitions. Word has length 36 [2021-11-21 01:02:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:04,071 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 2493 transitions. [2021-11-21 01:02:04,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2493 transitions. [2021-11-21 01:02:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:04,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:04,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:04,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-11-21 01:02:04,072 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash -839987266, now seen corresponding path program 156 times [2021-11-21 01:02:04,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:04,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68777281] [2021-11-21 01:02:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:04,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:04,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68777281] [2021-11-21 01:02:04,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68777281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:04,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:04,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:02:04,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036514353] [2021-11-21 01:02:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:04,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:02:04,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:02:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:02:04,519 INFO L87 Difference]: Start difference. First operand 858 states and 2493 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:08,800 INFO L93 Difference]: Finished difference Result 2726 states and 7420 transitions. [2021-11-21 01:02:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-21 01:02:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:08,805 INFO L225 Difference]: With dead ends: 2726 [2021-11-21 01:02:08,805 INFO L226 Difference]: Without dead ends: 2719 [2021-11-21 01:02:08,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=980, Invalid=2442, Unknown=0, NotChecked=0, Total=3422 [2021-11-21 01:02:08,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 412 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:08,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 0 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:02:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2021-11-21 01:02:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 849. [2021-11-21 01:02:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.890330188679245) internal successors, (2451), 848 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2451 transitions. [2021-11-21 01:02:08,841 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2451 transitions. Word has length 36 [2021-11-21 01:02:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:08,841 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2451 transitions. [2021-11-21 01:02:08,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2451 transitions. [2021-11-21 01:02:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:08,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:08,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:08,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-11-21 01:02:08,842 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash -243083814, now seen corresponding path program 157 times [2021-11-21 01:02:08,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050624707] [2021-11-21 01:02:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:08,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:09,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050624707] [2021-11-21 01:02:09,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050624707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:09,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:09,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:09,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386405832] [2021-11-21 01:02:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:09,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:09,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:09,277 INFO L87 Difference]: Start difference. First operand 849 states and 2451 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:10,545 INFO L93 Difference]: Finished difference Result 2504 states and 6797 transitions. [2021-11-21 01:02:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:02:10,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:10,549 INFO L225 Difference]: With dead ends: 2504 [2021-11-21 01:02:10,550 INFO L226 Difference]: Without dead ends: 2489 [2021-11-21 01:02:10,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:02:10,550 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 300 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:10,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 0 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:02:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2021-11-21 01:02:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 837. [2021-11-21 01:02:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.8947368421052633) internal successors, (2420), 836 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2420 transitions. [2021-11-21 01:02:10,573 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2420 transitions. Word has length 36 [2021-11-21 01:02:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:10,573 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2420 transitions. [2021-11-21 01:02:10,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2420 transitions. [2021-11-21 01:02:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:10,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:10,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:10,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-11-21 01:02:10,575 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:10,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 748371808, now seen corresponding path program 158 times [2021-11-21 01:02:10,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:10,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338378447] [2021-11-21 01:02:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:10,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:11,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:11,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338378447] [2021-11-21 01:02:11,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338378447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:11,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:11,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-21 01:02:11,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863868903] [2021-11-21 01:02:11,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:11,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:02:11,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:02:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:02:11,123 INFO L87 Difference]: Start difference. First operand 837 states and 2420 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:15,580 INFO L93 Difference]: Finished difference Result 2652 states and 7213 transitions. [2021-11-21 01:02:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-21 01:02:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:15,585 INFO L225 Difference]: With dead ends: 2652 [2021-11-21 01:02:15,585 INFO L226 Difference]: Without dead ends: 2645 [2021-11-21 01:02:15,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=979, Invalid=2443, Unknown=0, NotChecked=0, Total=3422 [2021-11-21 01:02:15,586 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 484 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:15,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 0 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:02:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-11-21 01:02:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 835. [2021-11-21 01:02:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.8920863309352516) internal successors, (2412), 834 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2412 transitions. [2021-11-21 01:02:15,623 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2412 transitions. Word has length 36 [2021-11-21 01:02:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:15,623 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2412 transitions. [2021-11-21 01:02:15,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2412 transitions. [2021-11-21 01:02:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:15,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:15,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:15,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-11-21 01:02:15,625 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash 573840480, now seen corresponding path program 159 times [2021-11-21 01:02:15,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:15,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768960344] [2021-11-21 01:02:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:15,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:15,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:15,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768960344] [2021-11-21 01:02:15,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768960344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:15,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:15,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 01:02:15,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084701168] [2021-11-21 01:02:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:15,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:02:15,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:02:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:02:15,988 INFO L87 Difference]: Start difference. First operand 835 states and 2412 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:17,089 INFO L93 Difference]: Finished difference Result 2343 states and 6251 transitions. [2021-11-21 01:02:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:02:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:17,095 INFO L225 Difference]: With dead ends: 2343 [2021-11-21 01:02:17,096 INFO L226 Difference]: Without dead ends: 2336 [2021-11-21 01:02:17,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:02:17,096 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 278 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:17,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 0 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:02:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2021-11-21 01:02:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 823. [2021-11-21 01:02:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.889294403892944) internal successors, (2375), 822 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2375 transitions. [2021-11-21 01:02:17,121 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2375 transitions. Word has length 36 [2021-11-21 01:02:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:17,121 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 2375 transitions. [2021-11-21 01:02:17,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2375 transitions. [2021-11-21 01:02:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:17,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:17,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:17,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-11-21 01:02:17,123 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:17,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1091106360, now seen corresponding path program 160 times [2021-11-21 01:02:17,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:17,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877721813] [2021-11-21 01:02:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:17,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:17,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877721813] [2021-11-21 01:02:17,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877721813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:17,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:17,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:17,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470071994] [2021-11-21 01:02:17,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:17,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:17,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:17,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:17,561 INFO L87 Difference]: Start difference. First operand 823 states and 2375 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:18,578 INFO L93 Difference]: Finished difference Result 2605 states and 7008 transitions. [2021-11-21 01:02:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:02:18,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:18,583 INFO L225 Difference]: With dead ends: 2605 [2021-11-21 01:02:18,583 INFO L226 Difference]: Without dead ends: 2598 [2021-11-21 01:02:18,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:02:18,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:18,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:02:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-11-21 01:02:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 769. [2021-11-21 01:02:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.8346354166666665) internal successors, (2177), 768 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2177 transitions. [2021-11-21 01:02:18,603 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2177 transitions. Word has length 36 [2021-11-21 01:02:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:18,603 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 2177 transitions. [2021-11-21 01:02:18,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2177 transitions. [2021-11-21 01:02:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:18,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:18,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:18,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-11-21 01:02:18,605 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1253455856, now seen corresponding path program 161 times [2021-11-21 01:02:18,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:18,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910865222] [2021-11-21 01:02:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:18,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:19,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:19,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910865222] [2021-11-21 01:02:19,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910865222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:19,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:19,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-21 01:02:19,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063338222] [2021-11-21 01:02:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:19,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 01:02:19,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 01:02:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:02:19,240 INFO L87 Difference]: Start difference. First operand 769 states and 2177 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:20,178 INFO L93 Difference]: Finished difference Result 1321 states and 3551 transitions. [2021-11-21 01:02:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:20,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:20,180 INFO L225 Difference]: With dead ends: 1321 [2021-11-21 01:02:20,180 INFO L226 Difference]: Without dead ends: 1314 [2021-11-21 01:02:20,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:02:20,181 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 319 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:20,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 0 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:02:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-11-21 01:02:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 787. [2021-11-21 01:02:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.846055979643766) internal successors, (2237), 786 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2237 transitions. [2021-11-21 01:02:20,193 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2237 transitions. Word has length 36 [2021-11-21 01:02:20,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:20,193 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2237 transitions. [2021-11-21 01:02:20,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2237 transitions. [2021-11-21 01:02:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:20,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:20,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:20,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-11-21 01:02:20,195 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1984223514, now seen corresponding path program 162 times [2021-11-21 01:02:20,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:20,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752494178] [2021-11-21 01:02:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:20,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:20,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:20,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752494178] [2021-11-21 01:02:20,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752494178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:20,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:20,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-21 01:02:20,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66230169] [2021-11-21 01:02:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:20,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 01:02:20,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 01:02:20,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:02:20,668 INFO L87 Difference]: Start difference. First operand 787 states and 2237 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:21,457 INFO L93 Difference]: Finished difference Result 1411 states and 3772 transitions. [2021-11-21 01:02:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:02:21,457 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:21,459 INFO L225 Difference]: With dead ends: 1411 [2021-11-21 01:02:21,459 INFO L226 Difference]: Without dead ends: 1404 [2021-11-21 01:02:21,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:02:21,460 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 347 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:21,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 0 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:02:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-21 01:02:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 805. [2021-11-21 01:02:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.853233830845771) internal successors, (2294), 804 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2294 transitions. [2021-11-21 01:02:21,474 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2294 transitions. Word has length 36 [2021-11-21 01:02:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:21,474 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2294 transitions. [2021-11-21 01:02:21,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2294 transitions. [2021-11-21 01:02:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:21,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:21,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:21,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-11-21 01:02:21,475 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1381701024, now seen corresponding path program 163 times [2021-11-21 01:02:21,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:21,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871752352] [2021-11-21 01:02:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:21,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:21,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:21,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871752352] [2021-11-21 01:02:21,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871752352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:21,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:21,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:02:21,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13628730] [2021-11-21 01:02:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:21,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:21,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:21,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:21,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:02:21,948 INFO L87 Difference]: Start difference. First operand 805 states and 2294 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:26,205 INFO L93 Difference]: Finished difference Result 1775 states and 4738 transitions. [2021-11-21 01:02:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-21 01:02:26,206 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:26,208 INFO L225 Difference]: With dead ends: 1775 [2021-11-21 01:02:26,208 INFO L226 Difference]: Without dead ends: 1768 [2021-11-21 01:02:26,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=686, Invalid=1570, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 01:02:26,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 431 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:26,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 0 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:02:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-21 01:02:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 803. [2021-11-21 01:02:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.8516209476309227) internal successors, (2287), 802 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2287 transitions. [2021-11-21 01:02:26,232 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2287 transitions. Word has length 36 [2021-11-21 01:02:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:26,232 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2287 transitions. [2021-11-21 01:02:26,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2287 transitions. [2021-11-21 01:02:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:26,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:26,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:26,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-11-21 01:02:26,234 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2029968290, now seen corresponding path program 164 times [2021-11-21 01:02:26,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:26,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539471628] [2021-11-21 01:02:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:26,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:26,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:26,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539471628] [2021-11-21 01:02:26,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539471628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:26,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:26,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:02:26,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893072435] [2021-11-21 01:02:26,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:26,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:26,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:02:26,638 INFO L87 Difference]: Start difference. First operand 803 states and 2287 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:28,628 INFO L93 Difference]: Finished difference Result 1424 states and 3896 transitions. [2021-11-21 01:02:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:02:28,628 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:28,630 INFO L225 Difference]: With dead ends: 1424 [2021-11-21 01:02:28,631 INFO L226 Difference]: Without dead ends: 1417 [2021-11-21 01:02:28,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:02:28,631 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 378 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 0 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:02:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2021-11-21 01:02:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 809. [2021-11-21 01:02:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.85519801980198) internal successors, (2307), 808 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2307 transitions. [2021-11-21 01:02:28,646 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2307 transitions. Word has length 36 [2021-11-21 01:02:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:28,646 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2307 transitions. [2021-11-21 01:02:28,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2307 transitions. [2021-11-21 01:02:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:28,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:28,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:28,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-11-21 01:02:28,647 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -404243988, now seen corresponding path program 165 times [2021-11-21 01:02:28,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:28,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934826350] [2021-11-21 01:02:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:28,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:29,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:29,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934826350] [2021-11-21 01:02:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934826350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:29,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:29,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:02:29,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669322819] [2021-11-21 01:02:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:29,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:29,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:02:29,132 INFO L87 Difference]: Start difference. First operand 809 states and 2307 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:30,508 INFO L93 Difference]: Finished difference Result 1409 states and 3870 transitions. [2021-11-21 01:02:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:02:30,508 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:30,510 INFO L225 Difference]: With dead ends: 1409 [2021-11-21 01:02:30,510 INFO L226 Difference]: Without dead ends: 1395 [2021-11-21 01:02:30,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:02:30,511 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 325 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:30,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:02:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-11-21 01:02:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 818. [2021-11-21 01:02:30,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 2.8494492044063646) internal successors, (2328), 817 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2328 transitions. [2021-11-21 01:02:30,525 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2328 transitions. Word has length 36 [2021-11-21 01:02:30,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:30,525 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 2328 transitions. [2021-11-21 01:02:30,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:30,525 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2328 transitions. [2021-11-21 01:02:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:30,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:30,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:30,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-11-21 01:02:30,527 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 354135368, now seen corresponding path program 166 times [2021-11-21 01:02:30,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:30,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991103436] [2021-11-21 01:02:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:30,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:31,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:31,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991103436] [2021-11-21 01:02:31,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991103436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:31,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:31,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:31,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625441] [2021-11-21 01:02:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:31,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:31,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:31,052 INFO L87 Difference]: Start difference. First operand 818 states and 2328 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:31,839 INFO L93 Difference]: Finished difference Result 1317 states and 3548 transitions. [2021-11-21 01:02:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:31,841 INFO L225 Difference]: With dead ends: 1317 [2021-11-21 01:02:31,841 INFO L226 Difference]: Without dead ends: 1310 [2021-11-21 01:02:31,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:02:31,842 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:31,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:02:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-11-21 01:02:31,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 819. [2021-11-21 01:02:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.852078239608802) internal successors, (2333), 818 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2333 transitions. [2021-11-21 01:02:31,856 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2333 transitions. Word has length 36 [2021-11-21 01:02:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:31,856 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2333 transitions. [2021-11-21 01:02:31,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2333 transitions. [2021-11-21 01:02:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:31,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:31,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:31,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-11-21 01:02:31,857 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1583204906, now seen corresponding path program 167 times [2021-11-21 01:02:31,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:31,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260187238] [2021-11-21 01:02:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:31,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:02:32,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:32,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260187238] [2021-11-21 01:02:32,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260187238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:02:32,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66515545] [2021-11-21 01:02:32,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:02:32,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:02:32,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:02:32,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:02:32,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:02:32,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:02:32,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:02:32,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:02:32,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:02:32,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-21 01:02:32,846 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-11-21 01:02:32,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2021-11-21 01:02:34,956 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:02:34,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 427 treesize of output 393 [2021-11-21 01:02:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:36,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:02:36,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66515545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:36,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:02:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 28 [2021-11-21 01:02:36,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962885834] [2021-11-21 01:02:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:02:36,431 INFO L87 Difference]: Start difference. First operand 819 states and 2333 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:37,215 INFO L93 Difference]: Finished difference Result 955 states and 2767 transitions. [2021-11-21 01:02:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:02:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:37,217 INFO L225 Difference]: With dead ends: 955 [2021-11-21 01:02:37,217 INFO L226 Difference]: Without dead ends: 948 [2021-11-21 01:02:37,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=272, Invalid=1288, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 01:02:37,217 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:37,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 259 Invalid, 0 Unknown, 253 Unchecked, 0.2s Time] [2021-11-21 01:02:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-21 01:02:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 836. [2021-11-21 01:02:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 2.8682634730538923) internal successors, (2395), 835 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2395 transitions. [2021-11-21 01:02:37,235 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2395 transitions. Word has length 36 [2021-11-21 01:02:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:37,235 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2395 transitions. [2021-11-21 01:02:37,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2395 transitions. [2021-11-21 01:02:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:37,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:37,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:37,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:02:37,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:02:37,462 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:37,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1723005188, now seen corresponding path program 168 times [2021-11-21 01:02:37,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:37,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125410485] [2021-11-21 01:02:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:37,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:37,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:37,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125410485] [2021-11-21 01:02:37,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125410485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:37,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:37,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:37,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55519429] [2021-11-21 01:02:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:37,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:37,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:37,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:37,906 INFO L87 Difference]: Start difference. First operand 836 states and 2395 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:38,766 INFO L93 Difference]: Finished difference Result 1451 states and 3977 transitions. [2021-11-21 01:02:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:38,766 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:38,768 INFO L225 Difference]: With dead ends: 1451 [2021-11-21 01:02:38,768 INFO L226 Difference]: Without dead ends: 1434 [2021-11-21 01:02:38,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:02:38,769 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 366 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:38,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 0 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:02:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-11-21 01:02:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 855. [2021-11-21 01:02:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 2.882903981264637) internal successors, (2462), 854 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:38,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2462 transitions. [2021-11-21 01:02:38,783 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2462 transitions. Word has length 36 [2021-11-21 01:02:38,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:38,783 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 2462 transitions. [2021-11-21 01:02:38,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2462 transitions. [2021-11-21 01:02:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:38,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:38,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:38,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-11-21 01:02:38,784 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:38,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash -824825550, now seen corresponding path program 169 times [2021-11-21 01:02:38,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:38,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85357179] [2021-11-21 01:02:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:38,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:39,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:39,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85357179] [2021-11-21 01:02:39,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85357179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:39,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:39,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:39,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807429148] [2021-11-21 01:02:39,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:39,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:39,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:39,188 INFO L87 Difference]: Start difference. First operand 855 states and 2462 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:40,006 INFO L93 Difference]: Finished difference Result 1440 states and 3922 transitions. [2021-11-21 01:02:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:40,009 INFO L225 Difference]: With dead ends: 1440 [2021-11-21 01:02:40,009 INFO L226 Difference]: Without dead ends: 1433 [2021-11-21 01:02:40,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:02:40,009 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 303 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:40,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 0 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:02:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2021-11-21 01:02:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 846. [2021-11-21 01:02:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.888757396449704) internal successors, (2441), 845 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2441 transitions. [2021-11-21 01:02:40,024 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2441 transitions. Word has length 36 [2021-11-21 01:02:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:40,024 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2441 transitions. [2021-11-21 01:02:40,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2441 transitions. [2021-11-21 01:02:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:40,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:40,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:40,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-11-21 01:02:40,026 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash -318759332, now seen corresponding path program 170 times [2021-11-21 01:02:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:40,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824535869] [2021-11-21 01:02:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:40,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:40,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:40,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824535869] [2021-11-21 01:02:40,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824535869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:40,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:40,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:02:40,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515093776] [2021-11-21 01:02:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:40,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:02:40,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:02:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:02:40,574 INFO L87 Difference]: Start difference. First operand 846 states and 2441 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:41,849 INFO L93 Difference]: Finished difference Result 1551 states and 4341 transitions. [2021-11-21 01:02:41,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:02:41,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:41,852 INFO L225 Difference]: With dead ends: 1551 [2021-11-21 01:02:41,852 INFO L226 Difference]: Without dead ends: 1537 [2021-11-21 01:02:41,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:02:41,852 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 382 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:41,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 0 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:02:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-11-21 01:02:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 860. [2021-11-21 01:02:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 2.9057043073341093) internal successors, (2496), 859 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2496 transitions. [2021-11-21 01:02:41,869 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2496 transitions. Word has length 36 [2021-11-21 01:02:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:41,869 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2496 transitions. [2021-11-21 01:02:41,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2496 transitions. [2021-11-21 01:02:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:41,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:41,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:41,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-11-21 01:02:41,870 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash -439494942, now seen corresponding path program 171 times [2021-11-21 01:02:41,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:41,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280286073] [2021-11-21 01:02:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:41,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:02:42,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280286073] [2021-11-21 01:02:42,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280286073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:02:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007824369] [2021-11-21 01:02:42,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:02:42,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:02:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:02:42,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:02:42,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:02:42,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:02:42,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:02:42,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 01:02:42,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:02:42,750 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-11-21 01:02:42,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-21 01:02:43,927 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:02:43,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 411 treesize of output 401 [2021-11-21 01:02:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:45,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:02:45,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007824369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:45,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:02:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 28 [2021-11-21 01:02:45,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003209563] [2021-11-21 01:02:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:45,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:45,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:02:45,639 INFO L87 Difference]: Start difference. First operand 860 states and 2496 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:46,578 INFO L93 Difference]: Finished difference Result 1004 states and 2956 transitions. [2021-11-21 01:02:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:02:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:46,581 INFO L225 Difference]: With dead ends: 1004 [2021-11-21 01:02:46,581 INFO L226 Difference]: Without dead ends: 997 [2021-11-21 01:02:46,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=287, Invalid=1273, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 01:02:46,581 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 175 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:46,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 0 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 171 Unchecked, 0.3s Time] [2021-11-21 01:02:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-21 01:02:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 875. [2021-11-21 01:02:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.925629290617849) internal successors, (2557), 874 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2557 transitions. [2021-11-21 01:02:46,594 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2557 transitions. Word has length 36 [2021-11-21 01:02:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:46,594 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2557 transitions. [2021-11-21 01:02:46,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2557 transitions. [2021-11-21 01:02:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:46,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:46,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:46,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:02:46,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2021-11-21 01:02:46,796 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:46,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1641886002, now seen corresponding path program 172 times [2021-11-21 01:02:46,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:46,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798513753] [2021-11-21 01:02:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:46,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:47,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:47,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798513753] [2021-11-21 01:02:47,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798513753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:47,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:47,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-21 01:02:47,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994511133] [2021-11-21 01:02:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:47,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 01:02:47,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 01:02:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:02:47,121 INFO L87 Difference]: Start difference. First operand 875 states and 2557 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:47,911 INFO L93 Difference]: Finished difference Result 1444 states and 3987 transitions. [2021-11-21 01:02:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:02:47,911 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:47,913 INFO L225 Difference]: With dead ends: 1444 [2021-11-21 01:02:47,913 INFO L226 Difference]: Without dead ends: 1437 [2021-11-21 01:02:47,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:02:47,914 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 379 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:47,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 0 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:02:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-11-21 01:02:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 870. [2021-11-21 01:02:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 2.907940161104718) internal successors, (2527), 869 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 2527 transitions. [2021-11-21 01:02:47,929 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 2527 transitions. Word has length 36 [2021-11-21 01:02:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:47,930 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 2527 transitions. [2021-11-21 01:02:47,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 2527 transitions. [2021-11-21 01:02:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:47,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:47,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:47,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-11-21 01:02:47,931 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -131834782, now seen corresponding path program 173 times [2021-11-21 01:02:47,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:47,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491632252] [2021-11-21 01:02:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:47,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:48,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491632252] [2021-11-21 01:02:48,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491632252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:48,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:48,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:02:48,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962549442] [2021-11-21 01:02:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:48,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:48,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:48,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:02:48,310 INFO L87 Difference]: Start difference. First operand 870 states and 2527 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:49,832 INFO L93 Difference]: Finished difference Result 1701 states and 4749 transitions. [2021-11-21 01:02:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 01:02:49,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:49,835 INFO L225 Difference]: With dead ends: 1701 [2021-11-21 01:02:49,835 INFO L226 Difference]: Without dead ends: 1694 [2021-11-21 01:02:49,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=394, Invalid=866, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 01:02:49,835 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:49,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:02:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-11-21 01:02:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 870. [2021-11-21 01:02:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 2.907940161104718) internal successors, (2527), 869 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 2527 transitions. [2021-11-21 01:02:49,852 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 2527 transitions. Word has length 36 [2021-11-21 01:02:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:49,852 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 2527 transitions. [2021-11-21 01:02:49,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 2527 transitions. [2021-11-21 01:02:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:49,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:49,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:49,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-11-21 01:02:49,853 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1060877540, now seen corresponding path program 174 times [2021-11-21 01:02:49,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:49,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5817275] [2021-11-21 01:02:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:49,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:50,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:50,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5817275] [2021-11-21 01:02:50,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5817275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:50,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:50,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:50,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268307611] [2021-11-21 01:02:50,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:50,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:50,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:50,200 INFO L87 Difference]: Start difference. First operand 870 states and 2527 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:50,854 INFO L93 Difference]: Finished difference Result 1514 states and 4134 transitions. [2021-11-21 01:02:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:50,857 INFO L225 Difference]: With dead ends: 1514 [2021-11-21 01:02:50,857 INFO L226 Difference]: Without dead ends: 1507 [2021-11-21 01:02:50,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:02:50,857 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 312 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:50,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 0 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:02:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-11-21 01:02:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 885. [2021-11-21 01:02:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 2.9049773755656108) internal successors, (2568), 884 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 2568 transitions. [2021-11-21 01:02:50,873 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 2568 transitions. Word has length 36 [2021-11-21 01:02:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:50,873 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 2568 transitions. [2021-11-21 01:02:50,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 2568 transitions. [2021-11-21 01:02:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:50,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:50,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:50,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-11-21 01:02:50,875 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 529432268, now seen corresponding path program 175 times [2021-11-21 01:02:50,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:50,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140251575] [2021-11-21 01:02:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:50,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:51,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:51,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140251575] [2021-11-21 01:02:51,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140251575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:51,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:51,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:51,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819638204] [2021-11-21 01:02:51,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:51,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:51,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:51,444 INFO L87 Difference]: Start difference. First operand 885 states and 2568 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:52,131 INFO L93 Difference]: Finished difference Result 1495 states and 4079 transitions. [2021-11-21 01:02:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:52,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:52,133 INFO L225 Difference]: With dead ends: 1495 [2021-11-21 01:02:52,134 INFO L226 Difference]: Without dead ends: 1488 [2021-11-21 01:02:52,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:02:52,134 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 372 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:52,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 0 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:02:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-11-21 01:02:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 858. [2021-11-21 01:02:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 2.884480746791132) internal successors, (2472), 857 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2472 transitions. [2021-11-21 01:02:52,149 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2472 transitions. Word has length 36 [2021-11-21 01:02:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:52,149 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 2472 transitions. [2021-11-21 01:02:52,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2472 transitions. [2021-11-21 01:02:52,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:52,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:52,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:52,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-11-21 01:02:52,151 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:52,151 INFO L85 PathProgramCache]: Analyzing trace with hash 155218074, now seen corresponding path program 176 times [2021-11-21 01:02:52,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:52,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105225798] [2021-11-21 01:02:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:52,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:02:52,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105225798] [2021-11-21 01:02:52,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105225798] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:02:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582229587] [2021-11-21 01:02:52,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:02:52,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:02:52,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:02:52,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:02:52,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:02:52,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:02:52,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:02:52,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:02:52,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:02:52,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-21 01:02:53,166 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-11-21 01:02:53,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2021-11-21 01:02:54,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:02:54,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 487 treesize of output 423 [2021-11-21 01:02:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:56,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:02:56,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582229587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:56,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:02:56,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 28 [2021-11-21 01:02:56,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681977454] [2021-11-21 01:02:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:56,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:56,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:02:56,032 INFO L87 Difference]: Start difference. First operand 858 states and 2472 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:56,701 INFO L93 Difference]: Finished difference Result 1252 states and 3594 transitions. [2021-11-21 01:02:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:02:56,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:56,703 INFO L225 Difference]: With dead ends: 1252 [2021-11-21 01:02:56,704 INFO L226 Difference]: Without dead ends: 1245 [2021-11-21 01:02:56,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 01:02:56,704 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:56,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 259 Invalid, 0 Unknown, 259 Unchecked, 0.2s Time] [2021-11-21 01:02:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-21 01:02:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 877. [2021-11-21 01:02:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 2.891552511415525) internal successors, (2533), 876 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2533 transitions. [2021-11-21 01:02:56,717 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2533 transitions. Word has length 36 [2021-11-21 01:02:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:56,718 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 2533 transitions. [2021-11-21 01:02:56,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2533 transitions. [2021-11-21 01:02:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:56,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:56,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:56,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:02:56,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:02:56,919 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -833539128, now seen corresponding path program 177 times [2021-11-21 01:02:56,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:56,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292280606] [2021-11-21 01:02:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:56,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:57,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292280606] [2021-11-21 01:02:57,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292280606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:57,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:02:57,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557756714] [2021-11-21 01:02:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:57,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:02:57,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:02:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:02:57,379 INFO L87 Difference]: Start difference. First operand 877 states and 2533 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:02:58,128 INFO L93 Difference]: Finished difference Result 1411 states and 3879 transitions. [2021-11-21 01:02:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:02:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:02:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:02:58,131 INFO L225 Difference]: With dead ends: 1411 [2021-11-21 01:02:58,131 INFO L226 Difference]: Without dead ends: 1394 [2021-11-21 01:02:58,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:02:58,131 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:02:58,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:02:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-21 01:02:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 813. [2021-11-21 01:02:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 2.8448275862068964) internal successors, (2310), 812 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 2310 transitions. [2021-11-21 01:02:58,146 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 2310 transitions. Word has length 36 [2021-11-21 01:02:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:02:58,146 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 2310 transitions. [2021-11-21 01:02:58,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:02:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 2310 transitions. [2021-11-21 01:02:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:02:58,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:02:58,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:02:58,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-11-21 01:02:58,147 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:02:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:02:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 86666466, now seen corresponding path program 178 times [2021-11-21 01:02:58,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:02:58,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878506566] [2021-11-21 01:02:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:02:58,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:02:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:02:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:02:58,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:02:58,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878506566] [2021-11-21 01:02:58,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878506566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:02:58,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:02:58,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:02:58,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897042125] [2021-11-21 01:02:58,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:02:58,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:02:58,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:02:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:02:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:02:58,605 INFO L87 Difference]: Start difference. First operand 813 states and 2310 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:01,484 INFO L93 Difference]: Finished difference Result 1546 states and 4117 transitions. [2021-11-21 01:03:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 01:03:01,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:01,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:01,488 INFO L225 Difference]: With dead ends: 1546 [2021-11-21 01:03:01,488 INFO L226 Difference]: Without dead ends: 1539 [2021-11-21 01:03:01,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=394, Invalid=866, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 01:03:01,488 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 351 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:01,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 0 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:03:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-11-21 01:03:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 813. [2021-11-21 01:03:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 2.8448275862068964) internal successors, (2310), 812 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 2310 transitions. [2021-11-21 01:03:01,503 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 2310 transitions. Word has length 36 [2021-11-21 01:03:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:01,504 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 2310 transitions. [2021-11-21 01:03:01,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 2310 transitions. [2021-11-21 01:03:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:01,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:01,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:01,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-11-21 01:03:01,505 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 502787292, now seen corresponding path program 179 times [2021-11-21 01:03:01,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:01,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832296047] [2021-11-21 01:03:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:01,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:01,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832296047] [2021-11-21 01:03:01,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832296047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:01,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:01,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:03:01,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195141852] [2021-11-21 01:03:01,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:01,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:03:01,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:03:01,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:03:01,967 INFO L87 Difference]: Start difference. First operand 813 states and 2310 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:04,329 INFO L93 Difference]: Finished difference Result 1566 states and 4184 transitions. [2021-11-21 01:03:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 01:03:04,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:04,332 INFO L225 Difference]: With dead ends: 1566 [2021-11-21 01:03:04,332 INFO L226 Difference]: Without dead ends: 1559 [2021-11-21 01:03:04,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=478, Invalid=1004, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 01:03:04,332 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:04,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:03:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2021-11-21 01:03:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 809. [2021-11-21 01:03:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.8415841584158414) internal successors, (2296), 808 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2296 transitions. [2021-11-21 01:03:04,348 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2296 transitions. Word has length 36 [2021-11-21 01:03:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:04,348 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2296 transitions. [2021-11-21 01:03:04,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2296 transitions. [2021-11-21 01:03:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:04,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:04,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:04,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-11-21 01:03:04,349 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:04,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1635506140, now seen corresponding path program 180 times [2021-11-21 01:03:04,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:04,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763106861] [2021-11-21 01:03:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:04,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:04,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:04,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763106861] [2021-11-21 01:03:04,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763106861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:04,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:04,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:04,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065232934] [2021-11-21 01:03:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:04,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:04,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:04,896 INFO L87 Difference]: Start difference. First operand 809 states and 2296 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:05,656 INFO L93 Difference]: Finished difference Result 1393 states and 3737 transitions. [2021-11-21 01:03:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:03:05,657 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:05,659 INFO L225 Difference]: With dead ends: 1393 [2021-11-21 01:03:05,659 INFO L226 Difference]: Without dead ends: 1386 [2021-11-21 01:03:05,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:03:05,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 290 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:05,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 0 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:03:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-21 01:03:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 788. [2021-11-21 01:03:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.837357052096569) internal successors, (2233), 787 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2233 transitions. [2021-11-21 01:03:05,672 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2233 transitions. Word has length 36 [2021-11-21 01:03:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:05,673 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 2233 transitions. [2021-11-21 01:03:05,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2233 transitions. [2021-11-21 01:03:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:05,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:05,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:05,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-11-21 01:03:05,674 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash -463146610, now seen corresponding path program 181 times [2021-11-21 01:03:05,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:05,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249264434] [2021-11-21 01:03:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:05,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:06,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:06,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249264434] [2021-11-21 01:03:06,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249264434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:06,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:06,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:06,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614395414] [2021-11-21 01:03:06,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:06,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:06,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:06,377 INFO L87 Difference]: Start difference. First operand 788 states and 2233 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:07,257 INFO L93 Difference]: Finished difference Result 1163 states and 3044 transitions. [2021-11-21 01:03:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:03:07,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:07,259 INFO L225 Difference]: With dead ends: 1163 [2021-11-21 01:03:07,260 INFO L226 Difference]: Without dead ends: 1156 [2021-11-21 01:03:07,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:03:07,260 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 286 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:07,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:03:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-21 01:03:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 800. [2021-11-21 01:03:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.83729662077597) internal successors, (2267), 799 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2267 transitions. [2021-11-21 01:03:07,272 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2267 transitions. Word has length 36 [2021-11-21 01:03:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:07,273 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2267 transitions. [2021-11-21 01:03:07,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2267 transitions. [2021-11-21 01:03:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:07,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:07,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:07,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-11-21 01:03:07,274 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:07,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1193914268, now seen corresponding path program 182 times [2021-11-21 01:03:07,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:07,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430683929] [2021-11-21 01:03:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:07,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:07,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430683929] [2021-11-21 01:03:07,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430683929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:07,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:07,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:07,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79632678] [2021-11-21 01:03:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:07,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:07,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:07,661 INFO L87 Difference]: Start difference. First operand 800 states and 2267 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:08,432 INFO L93 Difference]: Finished difference Result 1137 states and 3008 transitions. [2021-11-21 01:03:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:03:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:08,434 INFO L225 Difference]: With dead ends: 1137 [2021-11-21 01:03:08,434 INFO L226 Difference]: Without dead ends: 1130 [2021-11-21 01:03:08,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:03:08,435 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 348 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:08,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 0 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:03:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-21 01:03:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 818. [2021-11-21 01:03:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 2.8445532435740515) internal successors, (2324), 817 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2324 transitions. [2021-11-21 01:03:08,447 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2324 transitions. Word has length 36 [2021-11-21 01:03:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:08,447 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 2324 transitions. [2021-11-21 01:03:08,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2324 transitions. [2021-11-21 01:03:08,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:08,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:08,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:08,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-11-21 01:03:08,448 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2122957026, now seen corresponding path program 183 times [2021-11-21 01:03:08,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:08,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384734768] [2021-11-21 01:03:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:08,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:08,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:08,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384734768] [2021-11-21 01:03:08,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384734768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:08,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:08,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:08,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800785579] [2021-11-21 01:03:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:08,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:08,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:08,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:08,813 INFO L87 Difference]: Start difference. First operand 818 states and 2324 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:09,583 INFO L93 Difference]: Finished difference Result 1123 states and 2985 transitions. [2021-11-21 01:03:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:03:09,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:09,585 INFO L225 Difference]: With dead ends: 1123 [2021-11-21 01:03:09,585 INFO L226 Difference]: Without dead ends: 1116 [2021-11-21 01:03:09,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:03:09,585 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:09,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:03:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-21 01:03:09,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 794. [2021-11-21 01:03:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 2.837326607818411) internal successors, (2250), 793 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 2250 transitions. [2021-11-21 01:03:09,597 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 2250 transitions. Word has length 36 [2021-11-21 01:03:09,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:09,597 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 2250 transitions. [2021-11-21 01:03:09,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 2250 transitions. [2021-11-21 01:03:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:09,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:09,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:09,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-11-21 01:03:09,599 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:09,599 INFO L85 PathProgramCache]: Analyzing trace with hash 553153632, now seen corresponding path program 184 times [2021-11-21 01:03:09,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:09,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559403454] [2021-11-21 01:03:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:09,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:10,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:10,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559403454] [2021-11-21 01:03:10,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559403454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:10,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:10,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:10,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553005210] [2021-11-21 01:03:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:10,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:10,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:10,240 INFO L87 Difference]: Start difference. First operand 794 states and 2250 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:11,268 INFO L93 Difference]: Finished difference Result 1035 states and 2751 transitions. [2021-11-21 01:03:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:03:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:11,270 INFO L225 Difference]: With dead ends: 1035 [2021-11-21 01:03:11,270 INFO L226 Difference]: Without dead ends: 1028 [2021-11-21 01:03:11,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:03:11,271 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:11,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:03:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-21 01:03:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 788. [2021-11-21 01:03:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.837357052096569) internal successors, (2233), 787 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2233 transitions. [2021-11-21 01:03:11,281 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2233 transitions. Word has length 36 [2021-11-21 01:03:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:11,281 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 2233 transitions. [2021-11-21 01:03:11,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2233 transitions. [2021-11-21 01:03:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:11,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:11,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:11,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-11-21 01:03:11,282 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 673111956, now seen corresponding path program 185 times [2021-11-21 01:03:11,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:11,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552505106] [2021-11-21 01:03:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:11,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:11,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:11,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552505106] [2021-11-21 01:03:11,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552505106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:11,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:11,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:03:11,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164600848] [2021-11-21 01:03:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:11,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:03:11,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:03:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:03:11,703 INFO L87 Difference]: Start difference. First operand 788 states and 2233 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:14,096 INFO L93 Difference]: Finished difference Result 1159 states and 3124 transitions. [2021-11-21 01:03:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:03:14,097 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:14,098 INFO L225 Difference]: With dead ends: 1159 [2021-11-21 01:03:14,099 INFO L226 Difference]: Without dead ends: 1152 [2021-11-21 01:03:14,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:03:14,099 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 390 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:14,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 0 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:03:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-21 01:03:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 797. [2021-11-21 01:03:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 2.8391959798994977) internal successors, (2260), 796 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2260 transitions. [2021-11-21 01:03:14,111 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2260 transitions. Word has length 36 [2021-11-21 01:03:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:14,111 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 2260 transitions. [2021-11-21 01:03:14,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2260 transitions. [2021-11-21 01:03:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:14,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:14,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:14,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-11-21 01:03:14,113 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1761100322, now seen corresponding path program 186 times [2021-11-21 01:03:14,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:14,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624033871] [2021-11-21 01:03:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:14,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:14,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624033871] [2021-11-21 01:03:14,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624033871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:14,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:14,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:03:14,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214379248] [2021-11-21 01:03:14,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:14,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:03:14,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:03:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:03:14,617 INFO L87 Difference]: Start difference. First operand 797 states and 2260 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:15,995 INFO L93 Difference]: Finished difference Result 1102 states and 3023 transitions. [2021-11-21 01:03:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:03:15,996 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:15,997 INFO L225 Difference]: With dead ends: 1102 [2021-11-21 01:03:15,997 INFO L226 Difference]: Without dead ends: 1088 [2021-11-21 01:03:15,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:15,998 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 347 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:15,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 0 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:03:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-21 01:03:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 806. [2021-11-21 01:03:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.8335403726708073) internal successors, (2281), 805 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2281 transitions. [2021-11-21 01:03:16,011 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2281 transitions. Word has length 36 [2021-11-21 01:03:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:16,011 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2281 transitions. [2021-11-21 01:03:16,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2281 transitions. [2021-11-21 01:03:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:16,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:16,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:16,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-11-21 01:03:16,012 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1002720966, now seen corresponding path program 187 times [2021-11-21 01:03:16,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:16,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286858042] [2021-11-21 01:03:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:16,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:16,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:16,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286858042] [2021-11-21 01:03:16,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286858042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:16,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:16,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:16,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277977525] [2021-11-21 01:03:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:16,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:16,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:16,486 INFO L87 Difference]: Start difference. First operand 806 states and 2281 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:17,432 INFO L93 Difference]: Finished difference Result 958 states and 2539 transitions. [2021-11-21 01:03:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:03:17,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:17,434 INFO L225 Difference]: With dead ends: 958 [2021-11-21 01:03:17,434 INFO L226 Difference]: Without dead ends: 951 [2021-11-21 01:03:17,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:03:17,434 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:17,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:03:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-11-21 01:03:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 794. [2021-11-21 01:03:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 2.841109709962169) internal successors, (2253), 793 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 2253 transitions. [2021-11-21 01:03:17,446 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 2253 transitions. Word has length 36 [2021-11-21 01:03:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:17,446 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 2253 transitions. [2021-11-21 01:03:17,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 2253 transitions. [2021-11-21 01:03:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:17,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:17,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:17,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-11-21 01:03:17,447 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash -739912946, now seen corresponding path program 188 times [2021-11-21 01:03:17,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:17,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435227530] [2021-11-21 01:03:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:17,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:17,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:17,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435227530] [2021-11-21 01:03:17,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435227530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:17,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:03:17,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404506703] [2021-11-21 01:03:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:17,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:03:17,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:03:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:03:17,963 INFO L87 Difference]: Start difference. First operand 794 states and 2253 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:20,490 INFO L93 Difference]: Finished difference Result 1101 states and 3010 transitions. [2021-11-21 01:03:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 01:03:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:20,492 INFO L225 Difference]: With dead ends: 1101 [2021-11-21 01:03:20,492 INFO L226 Difference]: Without dead ends: 1094 [2021-11-21 01:03:20,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2021-11-21 01:03:20,492 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 308 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:20,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 0 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:03:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-11-21 01:03:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 791. [2021-11-21 01:03:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 2.8430379746835444) internal successors, (2246), 790 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 2246 transitions. [2021-11-21 01:03:20,505 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 2246 transitions. Word has length 36 [2021-11-21 01:03:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:20,505 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 2246 transitions. [2021-11-21 01:03:20,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 2246 transitions. [2021-11-21 01:03:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:20,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:20,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:20,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-11-21 01:03:20,506 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -22511874, now seen corresponding path program 189 times [2021-11-21 01:03:20,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:20,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812955019] [2021-11-21 01:03:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:20,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:20,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812955019] [2021-11-21 01:03:20,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812955019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:20,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:20,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:03:20,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869169441] [2021-11-21 01:03:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:03:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:03:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:03:20,938 INFO L87 Difference]: Start difference. First operand 791 states and 2246 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:23,115 INFO L93 Difference]: Finished difference Result 1298 states and 3490 transitions. [2021-11-21 01:03:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:03:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:23,117 INFO L225 Difference]: With dead ends: 1298 [2021-11-21 01:03:23,117 INFO L226 Difference]: Without dead ends: 1291 [2021-11-21 01:03:23,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:03:23,117 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 330 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:23,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 0 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:03:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-21 01:03:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 797. [2021-11-21 01:03:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 2.8467336683417086) internal successors, (2266), 796 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2266 transitions. [2021-11-21 01:03:23,132 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2266 transitions. Word has length 36 [2021-11-21 01:03:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:23,132 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 2266 transitions. [2021-11-21 01:03:23,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2266 transitions. [2021-11-21 01:03:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:23,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:23,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:23,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-11-21 01:03:23,133 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1838243144, now seen corresponding path program 190 times [2021-11-21 01:03:23,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:23,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699099332] [2021-11-21 01:03:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:23,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:23,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699099332] [2021-11-21 01:03:23,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699099332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:23,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:23,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:03:23,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109518010] [2021-11-21 01:03:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:23,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:03:23,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:03:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:03:23,606 INFO L87 Difference]: Start difference. First operand 797 states and 2266 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:24,844 INFO L93 Difference]: Finished difference Result 1283 states and 3460 transitions. [2021-11-21 01:03:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:03:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:24,846 INFO L225 Difference]: With dead ends: 1283 [2021-11-21 01:03:24,846 INFO L226 Difference]: Without dead ends: 1269 [2021-11-21 01:03:24,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:24,846 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 309 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:24,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 0 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:03:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-11-21 01:03:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 782. [2021-11-21 01:03:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 2.8335467349551857) internal successors, (2213), 781 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2213 transitions. [2021-11-21 01:03:24,861 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 2213 transitions. Word has length 36 [2021-11-21 01:03:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:24,861 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 2213 transitions. [2021-11-21 01:03:24,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2213 transitions. [2021-11-21 01:03:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:24,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:24,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:24,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-11-21 01:03:24,862 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1782862544, now seen corresponding path program 191 times [2021-11-21 01:03:24,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:24,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773242005] [2021-11-21 01:03:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:24,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:25,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:25,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773242005] [2021-11-21 01:03:25,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773242005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:25,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:25,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:03:25,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454744911] [2021-11-21 01:03:25,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:25,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:03:25,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:03:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:03:25,460 INFO L87 Difference]: Start difference. First operand 782 states and 2213 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:29,389 INFO L93 Difference]: Finished difference Result 2400 states and 6499 transitions. [2021-11-21 01:03:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:03:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:29,393 INFO L225 Difference]: With dead ends: 2400 [2021-11-21 01:03:29,393 INFO L226 Difference]: Without dead ends: 2393 [2021-11-21 01:03:29,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=578, Invalid=1402, Unknown=0, NotChecked=0, Total=1980 [2021-11-21 01:03:29,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 451 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:29,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 0 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:03:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2021-11-21 01:03:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 790. [2021-11-21 01:03:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.837769328263625) internal successors, (2239), 789 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2239 transitions. [2021-11-21 01:03:29,413 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2239 transitions. Word has length 36 [2021-11-21 01:03:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:29,413 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2239 transitions. [2021-11-21 01:03:29,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2239 transitions. [2021-11-21 01:03:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:29,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:29,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:29,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-11-21 01:03:29,414 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -651349734, now seen corresponding path program 192 times [2021-11-21 01:03:29,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:29,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377375143] [2021-11-21 01:03:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:29,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:29,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:29,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377375143] [2021-11-21 01:03:29,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377375143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:29,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:29,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-21 01:03:29,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404276820] [2021-11-21 01:03:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:29,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 01:03:29,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 01:03:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:03:29,981 INFO L87 Difference]: Start difference. First operand 790 states and 2239 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:31,723 INFO L93 Difference]: Finished difference Result 2344 states and 6394 transitions. [2021-11-21 01:03:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:03:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:31,727 INFO L225 Difference]: With dead ends: 2344 [2021-11-21 01:03:31,727 INFO L226 Difference]: Without dead ends: 2330 [2021-11-21 01:03:31,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=336, Invalid=786, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:03:31,728 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 391 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:31,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 0 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:03:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-11-21 01:03:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 784. [2021-11-21 01:03:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 2.83397190293742) internal successors, (2219), 783 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2219 transitions. [2021-11-21 01:03:31,747 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2219 transitions. Word has length 36 [2021-11-21 01:03:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:31,748 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2219 transitions. [2021-11-21 01:03:31,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2219 transitions. [2021-11-21 01:03:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:31,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:31,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:31,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-11-21 01:03:31,749 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1231416822, now seen corresponding path program 193 times [2021-11-21 01:03:31,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:31,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810864540] [2021-11-21 01:03:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:31,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:32,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:32,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810864540] [2021-11-21 01:03:32,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810864540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:32,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:32,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:32,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376846710] [2021-11-21 01:03:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:32,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:32,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:32,261 INFO L87 Difference]: Start difference. First operand 784 states and 2219 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:33,338 INFO L93 Difference]: Finished difference Result 2168 states and 5807 transitions. [2021-11-21 01:03:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:33,341 INFO L225 Difference]: With dead ends: 2168 [2021-11-21 01:03:33,341 INFO L226 Difference]: Without dead ends: 2153 [2021-11-21 01:03:33,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:33,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 286 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:33,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 0 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:03:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-21 01:03:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 803. [2021-11-21 01:03:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.827930174563591) internal successors, (2268), 802 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2268 transitions. [2021-11-21 01:03:33,361 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2268 transitions. Word has length 36 [2021-11-21 01:03:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:33,361 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2268 transitions. [2021-11-21 01:03:33,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2268 transitions. [2021-11-21 01:03:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:33,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:33,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:33,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-11-21 01:03:33,363 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:33,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash 644472630, now seen corresponding path program 194 times [2021-11-21 01:03:33,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:33,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758475392] [2021-11-21 01:03:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:33,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:33,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:33,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758475392] [2021-11-21 01:03:33,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758475392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:33,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:33,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:33,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403209279] [2021-11-21 01:03:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:33,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:33,726 INFO L87 Difference]: Start difference. First operand 803 states and 2268 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:34,804 INFO L93 Difference]: Finished difference Result 2173 states and 5801 transitions. [2021-11-21 01:03:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:34,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:34,807 INFO L225 Difference]: With dead ends: 2173 [2021-11-21 01:03:34,807 INFO L226 Difference]: Without dead ends: 2166 [2021-11-21 01:03:34,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:34,808 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:34,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:03:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-11-21 01:03:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 790. [2021-11-21 01:03:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.837769328263625) internal successors, (2239), 789 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2239 transitions. [2021-11-21 01:03:34,828 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2239 transitions. Word has length 36 [2021-11-21 01:03:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:34,828 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2239 transitions. [2021-11-21 01:03:34,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2239 transitions. [2021-11-21 01:03:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:34,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:34,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:34,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-11-21 01:03:34,829 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash 586421728, now seen corresponding path program 195 times [2021-11-21 01:03:34,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:34,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102369608] [2021-11-21 01:03:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:34,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:35,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:35,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102369608] [2021-11-21 01:03:35,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102369608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:35,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:35,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:35,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754046673] [2021-11-21 01:03:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:35,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:35,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:35,258 INFO L87 Difference]: Start difference. First operand 790 states and 2239 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:36,409 INFO L93 Difference]: Finished difference Result 2066 states and 5620 transitions. [2021-11-21 01:03:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:36,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:36,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:36,412 INFO L225 Difference]: With dead ends: 2066 [2021-11-21 01:03:36,412 INFO L226 Difference]: Without dead ends: 2051 [2021-11-21 01:03:36,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:36,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 298 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:36,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 0 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:03:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-11-21 01:03:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 838. [2021-11-21 01:03:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.8757467144563917) internal successors, (2407), 837 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2407 transitions. [2021-11-21 01:03:36,432 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2407 transitions. Word has length 36 [2021-11-21 01:03:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:36,432 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2407 transitions. [2021-11-21 01:03:36,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2407 transitions. [2021-11-21 01:03:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:36,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:36,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:36,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-11-21 01:03:36,433 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1832656116, now seen corresponding path program 196 times [2021-11-21 01:03:36,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:36,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038632097] [2021-11-21 01:03:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:36,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:37,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:37,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038632097] [2021-11-21 01:03:37,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038632097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:37,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:37,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-21 01:03:37,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550369431] [2021-11-21 01:03:37,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:37,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:03:37,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:03:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:03:37,038 INFO L87 Difference]: Start difference. First operand 838 states and 2407 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:39,656 INFO L93 Difference]: Finished difference Result 2687 states and 7244 transitions. [2021-11-21 01:03:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-21 01:03:39,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:39,661 INFO L225 Difference]: With dead ends: 2687 [2021-11-21 01:03:39,661 INFO L226 Difference]: Without dead ends: 2680 [2021-11-21 01:03:39,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=577, Invalid=1403, Unknown=0, NotChecked=0, Total=1980 [2021-11-21 01:03:39,661 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 434 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:39,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 0 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:03:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-11-21 01:03:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 850. [2021-11-21 01:03:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 2.899882214369847) internal successors, (2462), 849 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2462 transitions. [2021-11-21 01:03:39,686 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2462 transitions. Word has length 36 [2021-11-21 01:03:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:39,686 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2462 transitions. [2021-11-21 01:03:39,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2462 transitions. [2021-11-21 01:03:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:39,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:39,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:39,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-11-21 01:03:39,687 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1473636454, now seen corresponding path program 197 times [2021-11-21 01:03:39,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:39,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111722752] [2021-11-21 01:03:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:39,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:40,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111722752] [2021-11-21 01:03:40,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111722752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:40,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:40,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:40,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784289830] [2021-11-21 01:03:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:40,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:40,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:40,077 INFO L87 Difference]: Start difference. First operand 850 states and 2462 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:41,136 INFO L93 Difference]: Finished difference Result 2025 states and 5567 transitions. [2021-11-21 01:03:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:41,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:41,139 INFO L225 Difference]: With dead ends: 2025 [2021-11-21 01:03:41,140 INFO L226 Difference]: Without dead ends: 2010 [2021-11-21 01:03:41,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:41,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 284 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:41,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 0 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:03:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2021-11-21 01:03:41,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 868. [2021-11-21 01:03:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.891580161476355) internal successors, (2507), 867 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2507 transitions. [2021-11-21 01:03:41,159 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2507 transitions. Word has length 36 [2021-11-21 01:03:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:41,159 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2507 transitions. [2021-11-21 01:03:41,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2507 transitions. [2021-11-21 01:03:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:41,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:41,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:41,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-11-21 01:03:41,161 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:41,161 INFO L85 PathProgramCache]: Analyzing trace with hash 987142582, now seen corresponding path program 198 times [2021-11-21 01:03:41,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:41,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140605331] [2021-11-21 01:03:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:41,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:41,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140605331] [2021-11-21 01:03:41,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140605331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:41,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:41,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649288002] [2021-11-21 01:03:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:41,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:41,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:41,543 INFO L87 Difference]: Start difference. First operand 868 states and 2507 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:42,705 INFO L93 Difference]: Finished difference Result 2061 states and 5629 transitions. [2021-11-21 01:03:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:42,705 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:42,708 INFO L225 Difference]: With dead ends: 2061 [2021-11-21 01:03:42,708 INFO L226 Difference]: Without dead ends: 2054 [2021-11-21 01:03:42,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:42,709 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:42,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:03:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-21 01:03:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 850. [2021-11-21 01:03:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 2.899882214369847) internal successors, (2462), 849 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2462 transitions. [2021-11-21 01:03:42,727 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2462 transitions. Word has length 36 [2021-11-21 01:03:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:42,727 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2462 transitions. [2021-11-21 01:03:42,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2462 transitions. [2021-11-21 01:03:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:42,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:42,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:42,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-11-21 01:03:42,729 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1577877350, now seen corresponding path program 199 times [2021-11-21 01:03:42,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:42,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631419976] [2021-11-21 01:03:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:42,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:43,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:43,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631419976] [2021-11-21 01:03:43,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631419976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:43,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:43,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:43,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789841586] [2021-11-21 01:03:43,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:43,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:43,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:43,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:43,146 INFO L87 Difference]: Start difference. First operand 850 states and 2462 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:44,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:44,165 INFO L93 Difference]: Finished difference Result 2159 states and 5844 transitions. [2021-11-21 01:03:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:44,166 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:44,168 INFO L225 Difference]: With dead ends: 2159 [2021-11-21 01:03:44,169 INFO L226 Difference]: Without dead ends: 2152 [2021-11-21 01:03:44,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:44,169 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 369 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:44,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 0 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:03:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-11-21 01:03:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 868. [2021-11-21 01:03:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 2.9054209919261824) internal successors, (2519), 867 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2519 transitions. [2021-11-21 01:03:44,187 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2519 transitions. Word has length 36 [2021-11-21 01:03:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:44,188 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2519 transitions. [2021-11-21 01:03:44,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2519 transitions. [2021-11-21 01:03:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:44,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:44,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:44,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-11-21 01:03:44,189 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 648834592, now seen corresponding path program 200 times [2021-11-21 01:03:44,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:44,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537617737] [2021-11-21 01:03:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:44,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:03:44,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:44,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537617737] [2021-11-21 01:03:44,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537617737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:03:44,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314242544] [2021-11-21 01:03:44,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:03:44,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:03:44,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:03:44,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:03:44,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:03:44,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:03:44,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:03:44,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:03:44,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:03:45,155 INFO L354 Elim1Store]: treesize reduction 156, result has 22.8 percent of original size [2021-11-21 01:03:45,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 75 [2021-11-21 01:03:45,304 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:03:45,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 263 [2021-11-21 01:03:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:46,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:03:46,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314242544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:46,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:03:46,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 24 [2021-11-21 01:03:46,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324302021] [2021-11-21 01:03:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:46,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:46,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:46,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:46,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:46,658 INFO L87 Difference]: Start difference. First operand 868 states and 2519 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:48,537 INFO L93 Difference]: Finished difference Result 2129 states and 5883 transitions. [2021-11-21 01:03:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 01:03:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:48,541 INFO L225 Difference]: With dead ends: 2129 [2021-11-21 01:03:48,541 INFO L226 Difference]: Without dead ends: 2122 [2021-11-21 01:03:48,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=369, Invalid=1353, Unknown=0, NotChecked=0, Total=1722 [2021-11-21 01:03:48,541 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:48,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 728 Invalid, 0 Unknown, 119 Unchecked, 0.6s Time] [2021-11-21 01:03:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-21 01:03:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 882. [2021-11-21 01:03:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.927355278093076) internal successors, (2579), 881 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2579 transitions. [2021-11-21 01:03:48,561 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2579 transitions. Word has length 36 [2021-11-21 01:03:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:48,561 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2579 transitions. [2021-11-21 01:03:48,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2579 transitions. [2021-11-21 01:03:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:48,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:48,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:48,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:03:48,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:03:48,763 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1491233486, now seen corresponding path program 201 times [2021-11-21 01:03:48,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:48,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583146555] [2021-11-21 01:03:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:48,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:49,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:49,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583146555] [2021-11-21 01:03:49,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583146555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:49,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:49,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-21 01:03:49,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330180779] [2021-11-21 01:03:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:49,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:03:49,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:03:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:03:49,767 INFO L87 Difference]: Start difference. First operand 882 states and 2579 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:53,348 INFO L93 Difference]: Finished difference Result 2714 states and 7243 transitions. [2021-11-21 01:03:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:03:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:53,352 INFO L225 Difference]: With dead ends: 2714 [2021-11-21 01:03:53,353 INFO L226 Difference]: Without dead ends: 2707 [2021-11-21 01:03:53,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=637, Invalid=1525, Unknown=0, NotChecked=0, Total=2162 [2021-11-21 01:03:53,353 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 466 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:53,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 0 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:03:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-11-21 01:03:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 882. [2021-11-21 01:03:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.9182746878547103) internal successors, (2571), 881 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2571 transitions. [2021-11-21 01:03:53,378 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2571 transitions. Word has length 36 [2021-11-21 01:03:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:53,378 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2571 transitions. [2021-11-21 01:03:53,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2571 transitions. [2021-11-21 01:03:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:53,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:53,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:53,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-11-21 01:03:53,380 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1108044854, now seen corresponding path program 202 times [2021-11-21 01:03:53,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:53,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958846680] [2021-11-21 01:03:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:53,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:53,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:53,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958846680] [2021-11-21 01:03:53,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958846680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:53,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:53,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:03:53,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345680545] [2021-11-21 01:03:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:53,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:03:53,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:03:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:03:53,964 INFO L87 Difference]: Start difference. First operand 882 states and 2571 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:57,029 INFO L93 Difference]: Finished difference Result 2676 states and 7173 transitions. [2021-11-21 01:03:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:03:57,030 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:57,033 INFO L225 Difference]: With dead ends: 2676 [2021-11-21 01:03:57,033 INFO L226 Difference]: Without dead ends: 2669 [2021-11-21 01:03:57,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=612, Invalid=1458, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 01:03:57,034 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 450 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:57,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 0 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:03:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-11-21 01:03:57,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 873. [2021-11-21 01:03:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.9139908256880735) internal successors, (2541), 872 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2541 transitions. [2021-11-21 01:03:57,058 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2541 transitions. Word has length 36 [2021-11-21 01:03:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:57,059 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 2541 transitions. [2021-11-21 01:03:57,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2541 transitions. [2021-11-21 01:03:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:57,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:57,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:57,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-11-21 01:03:57,060 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash 142239862, now seen corresponding path program 203 times [2021-11-21 01:03:57,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179962634] [2021-11-21 01:03:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:57,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:57,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:57,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179962634] [2021-11-21 01:03:57,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179962634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:57,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:57,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:57,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752018361] [2021-11-21 01:03:57,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:57,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:57,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:57,495 INFO L87 Difference]: Start difference. First operand 873 states and 2541 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:58,393 INFO L93 Difference]: Finished difference Result 2079 states and 5675 transitions. [2021-11-21 01:03:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:58,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:58,397 INFO L225 Difference]: With dead ends: 2079 [2021-11-21 01:03:58,397 INFO L226 Difference]: Without dead ends: 2072 [2021-11-21 01:03:58,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:58,398 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 344 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:58,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 0 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:03:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-11-21 01:03:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 831. [2021-11-21 01:03:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.883132530120482) internal successors, (2393), 830 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2393 transitions. [2021-11-21 01:03:58,420 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2393 transitions. Word has length 36 [2021-11-21 01:03:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:58,420 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2393 transitions. [2021-11-21 01:03:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2393 transitions. [2021-11-21 01:03:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:58,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:58,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:58,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-11-21 01:03:58,421 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:58,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1115161060, now seen corresponding path program 204 times [2021-11-21 01:03:58,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:58,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593784787] [2021-11-21 01:03:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:58,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:03:58,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593784787] [2021-11-21 01:03:58,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593784787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:58,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:58,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:03:58,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755757727] [2021-11-21 01:03:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:58,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:03:58,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:03:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:03:58,745 INFO L87 Difference]: Start difference. First operand 831 states and 2393 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:59,708 INFO L93 Difference]: Finished difference Result 2132 states and 5749 transitions. [2021-11-21 01:03:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:03:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:03:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:59,711 INFO L225 Difference]: With dead ends: 2132 [2021-11-21 01:03:59,711 INFO L226 Difference]: Without dead ends: 2125 [2021-11-21 01:03:59,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-21 01:03:59,711 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 327 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:59,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 0 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:03:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2021-11-21 01:03:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 787. [2021-11-21 01:03:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.83587786259542) internal successors, (2229), 786 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2229 transitions. [2021-11-21 01:03:59,728 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2229 transitions. Word has length 36 [2021-11-21 01:03:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:59,728 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2229 transitions. [2021-11-21 01:03:59,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2229 transitions. [2021-11-21 01:03:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:03:59,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:59,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:59,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-11-21 01:03:59,729 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:03:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1970189446, now seen corresponding path program 205 times [2021-11-21 01:03:59,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:59,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937012273] [2021-11-21 01:03:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:59,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:00,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:00,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937012273] [2021-11-21 01:04:00,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937012273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:00,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:00,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:04:00,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886136032] [2021-11-21 01:04:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:00,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:04:00,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:04:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:04:00,296 INFO L87 Difference]: Start difference. First operand 787 states and 2229 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:02,973 INFO L93 Difference]: Finished difference Result 956 states and 2521 transitions. [2021-11-21 01:04:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:04:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:02,974 INFO L225 Difference]: With dead ends: 956 [2021-11-21 01:04:02,975 INFO L226 Difference]: Without dead ends: 949 [2021-11-21 01:04:02,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=391, Invalid=869, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 01:04:02,975 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 394 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:02,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 0 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:04:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-11-21 01:04:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 790. [2021-11-21 01:04:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.8339670468948035) internal successors, (2236), 789 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2236 transitions. [2021-11-21 01:04:02,987 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2236 transitions. Word has length 36 [2021-11-21 01:04:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:02,987 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2236 transitions. [2021-11-21 01:04:02,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2236 transitions. [2021-11-21 01:04:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:02,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:02,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:02,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-11-21 01:04:02,988 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -464022832, now seen corresponding path program 206 times [2021-11-21 01:04:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109738721] [2021-11-21 01:04:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:02,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:03,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:03,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109738721] [2021-11-21 01:04:03,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109738721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:03,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:03,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:04:03,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515714202] [2021-11-21 01:04:03,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:03,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:04:03,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:04:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:04:03,555 INFO L87 Difference]: Start difference. First operand 790 states and 2236 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:04,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:04,425 INFO L93 Difference]: Finished difference Result 932 states and 2475 transitions. [2021-11-21 01:04:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:04:04,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:04,427 INFO L225 Difference]: With dead ends: 932 [2021-11-21 01:04:04,427 INFO L226 Difference]: Without dead ends: 918 [2021-11-21 01:04:04,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:04:04,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 337 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:04,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 0 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:04:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-21 01:04:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 787. [2021-11-21 01:04:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.83587786259542) internal successors, (2229), 786 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2229 transitions. [2021-11-21 01:04:04,438 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2229 transitions. Word has length 36 [2021-11-21 01:04:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:04,438 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2229 transitions. [2021-11-21 01:04:04,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2229 transitions. [2021-11-21 01:04:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:04,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:04,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:04,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-11-21 01:04:04,439 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1119870342, now seen corresponding path program 207 times [2021-11-21 01:04:04,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:04,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458965779] [2021-11-21 01:04:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:04,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:05,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458965779] [2021-11-21 01:04:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458965779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:05,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:05,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:04:05,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933133242] [2021-11-21 01:04:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:04:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:04:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:04:05,168 INFO L87 Difference]: Start difference. First operand 787 states and 2229 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:07,386 INFO L93 Difference]: Finished difference Result 872 states and 2345 transitions. [2021-11-21 01:04:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:04:07,387 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:07,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:07,388 INFO L225 Difference]: With dead ends: 872 [2021-11-21 01:04:07,388 INFO L226 Difference]: Without dead ends: 865 [2021-11-21 01:04:07,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2021-11-21 01:04:07,388 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 306 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:07,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 0 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:04:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-21 01:04:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 784. [2021-11-21 01:04:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 2.837803320561941) internal successors, (2222), 783 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2222 transitions. [2021-11-21 01:04:07,399 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2222 transitions. Word has length 36 [2021-11-21 01:04:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:07,400 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2222 transitions. [2021-11-21 01:04:07,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2222 transitions. [2021-11-21 01:04:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:07,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:07,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:07,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-11-21 01:04:07,401 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:07,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2072900826, now seen corresponding path program 208 times [2021-11-21 01:04:07,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:07,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538931189] [2021-11-21 01:04:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:07,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:07,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:07,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538931189] [2021-11-21 01:04:07,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538931189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:07,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:07,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:04:07,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159796029] [2021-11-21 01:04:07,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:07,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:04:07,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:04:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:04:07,844 INFO L87 Difference]: Start difference. First operand 784 states and 2222 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:09,021 INFO L93 Difference]: Finished difference Result 1475 states and 4006 transitions. [2021-11-21 01:04:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:04:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:09,024 INFO L225 Difference]: With dead ends: 1475 [2021-11-21 01:04:09,024 INFO L226 Difference]: Without dead ends: 1460 [2021-11-21 01:04:09,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:04:09,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 285 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:09,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 0 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:04:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-21 01:04:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 796. [2021-11-21 01:04:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.828930817610063) internal successors, (2249), 795 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2249 transitions. [2021-11-21 01:04:09,040 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2249 transitions. Word has length 36 [2021-11-21 01:04:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:09,040 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2249 transitions. [2021-11-21 01:04:09,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2249 transitions. [2021-11-21 01:04:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:09,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:09,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:09,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-11-21 01:04:09,041 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash -346177018, now seen corresponding path program 209 times [2021-11-21 01:04:09,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:09,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660577159] [2021-11-21 01:04:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:09,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:09,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:09,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660577159] [2021-11-21 01:04:09,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660577159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:09,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:09,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:04:09,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974791469] [2021-11-21 01:04:09,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:09,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:04:09,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:04:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:04:09,647 INFO L87 Difference]: Start difference. First operand 796 states and 2249 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:11,040 INFO L93 Difference]: Finished difference Result 1483 states and 4013 transitions. [2021-11-21 01:04:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:04:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:11,043 INFO L225 Difference]: With dead ends: 1483 [2021-11-21 01:04:11,043 INFO L226 Difference]: Without dead ends: 1476 [2021-11-21 01:04:11,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:04:11,043 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:11,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:04:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-21 01:04:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 783. [2021-11-21 01:04:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 2.838874680306905) internal successors, (2220), 782 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 2220 transitions. [2021-11-21 01:04:11,059 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 2220 transitions. Word has length 36 [2021-11-21 01:04:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:11,059 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 2220 transitions. [2021-11-21 01:04:11,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 2220 transitions. [2021-11-21 01:04:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:11,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:11,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:11,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-11-21 01:04:11,060 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1151335798, now seen corresponding path program 210 times [2021-11-21 01:04:11,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:11,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059385080] [2021-11-21 01:04:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:11,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:11,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:11,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059385080] [2021-11-21 01:04:11,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059385080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:11,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:11,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:04:11,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396504736] [2021-11-21 01:04:11,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:11,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:04:11,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:04:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:04:11,455 INFO L87 Difference]: Start difference. First operand 783 states and 2220 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:12,312 INFO L93 Difference]: Finished difference Result 1184 states and 3154 transitions. [2021-11-21 01:04:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:04:12,313 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:12,315 INFO L225 Difference]: With dead ends: 1184 [2021-11-21 01:04:12,315 INFO L226 Difference]: Without dead ends: 1177 [2021-11-21 01:04:12,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:04:12,315 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:12,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:04:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-21 01:04:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 775. [2021-11-21 01:04:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.834625322997416) internal successors, (2194), 774 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2194 transitions. [2021-11-21 01:04:12,328 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2194 transitions. Word has length 36 [2021-11-21 01:04:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:12,328 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2194 transitions. [2021-11-21 01:04:12,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2194 transitions. [2021-11-21 01:04:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:12,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:12,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:12,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-11-21 01:04:12,330 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1282876480, now seen corresponding path program 211 times [2021-11-21 01:04:12,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:12,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090798092] [2021-11-21 01:04:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:12,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:12,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:12,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090798092] [2021-11-21 01:04:12,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090798092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:12,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:12,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 01:04:12,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700974512] [2021-11-21 01:04:12,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:12,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:04:12,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:04:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:04:12,751 INFO L87 Difference]: Start difference. First operand 775 states and 2194 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:13,617 INFO L93 Difference]: Finished difference Result 1195 states and 3171 transitions. [2021-11-21 01:04:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:04:13,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:13,619 INFO L225 Difference]: With dead ends: 1195 [2021-11-21 01:04:13,619 INFO L226 Difference]: Without dead ends: 1181 [2021-11-21 01:04:13,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:04:13,620 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 303 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:13,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 0 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:04:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-21 01:04:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 757. [2021-11-21 01:04:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 2.8267195767195767) internal successors, (2137), 756 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2137 transitions. [2021-11-21 01:04:13,632 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2137 transitions. Word has length 36 [2021-11-21 01:04:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:13,632 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 2137 transitions. [2021-11-21 01:04:13,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2137 transitions. [2021-11-21 01:04:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:13,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:13,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:13,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-11-21 01:04:13,633 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1150055452, now seen corresponding path program 212 times [2021-11-21 01:04:13,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022078601] [2021-11-21 01:04:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:13,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:14,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022078601] [2021-11-21 01:04:14,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022078601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:14,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:14,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:14,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578869313] [2021-11-21 01:04:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:14,026 INFO L87 Difference]: Start difference. First operand 757 states and 2137 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:16,846 INFO L93 Difference]: Finished difference Result 2199 states and 5700 transitions. [2021-11-21 01:04:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-21 01:04:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:16,850 INFO L225 Difference]: With dead ends: 2199 [2021-11-21 01:04:16,850 INFO L226 Difference]: Without dead ends: 2185 [2021-11-21 01:04:16,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=408, Invalid=1074, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 01:04:16,850 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 320 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:16,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 0 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:04:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2021-11-21 01:04:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 774. [2021-11-21 01:04:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 2.8292367399741267) internal successors, (2187), 773 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2187 transitions. [2021-11-21 01:04:16,868 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2187 transitions. Word has length 36 [2021-11-21 01:04:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:16,869 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 2187 transitions. [2021-11-21 01:04:16,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2187 transitions. [2021-11-21 01:04:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:16,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:16,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:16,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-11-21 01:04:16,870 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash 419287794, now seen corresponding path program 213 times [2021-11-21 01:04:16,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:16,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519927011] [2021-11-21 01:04:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:16,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:17,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519927011] [2021-11-21 01:04:17,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519927011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:17,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:17,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:17,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430707724] [2021-11-21 01:04:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:17,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:17,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:17,525 INFO L87 Difference]: Start difference. First operand 774 states and 2187 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:24,774 INFO L93 Difference]: Finished difference Result 2356 states and 6074 transitions. [2021-11-21 01:04:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 01:04:24,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:24,778 INFO L225 Difference]: With dead ends: 2356 [2021-11-21 01:04:24,778 INFO L226 Difference]: Without dead ends: 2342 [2021-11-21 01:04:24,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=518, Invalid=1462, Unknown=0, NotChecked=0, Total=1980 [2021-11-21 01:04:24,778 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 409 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:24,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 0 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:04:24,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-11-21 01:04:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 780. [2021-11-21 01:04:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.8369704749679077) internal successors, (2210), 779 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2210 transitions. [2021-11-21 01:04:24,796 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2210 transitions. Word has length 36 [2021-11-21 01:04:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:24,796 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 2210 transitions. [2021-11-21 01:04:24,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2210 transitions. [2021-11-21 01:04:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:24,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:24,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:24,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-11-21 01:04:24,798 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -509754964, now seen corresponding path program 214 times [2021-11-21 01:04:24,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:24,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149349349] [2021-11-21 01:04:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:24,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:25,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:25,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149349349] [2021-11-21 01:04:25,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149349349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:25,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:25,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:25,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820559221] [2021-11-21 01:04:25,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:25,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:25,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:25,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:25,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:25,256 INFO L87 Difference]: Start difference. First operand 780 states and 2210 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:29,445 INFO L93 Difference]: Finished difference Result 2367 states and 6135 transitions. [2021-11-21 01:04:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-21 01:04:29,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:29,449 INFO L225 Difference]: With dead ends: 2367 [2021-11-21 01:04:29,449 INFO L226 Difference]: Without dead ends: 2353 [2021-11-21 01:04:29,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 01:04:29,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:29,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:04:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-21 01:04:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 778. [2021-11-21 01:04:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.832689832689833) internal successors, (2201), 777 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2201 transitions. [2021-11-21 01:04:29,469 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2201 transitions. Word has length 36 [2021-11-21 01:04:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:29,469 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2201 transitions. [2021-11-21 01:04:29,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2201 transitions. [2021-11-21 01:04:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:29,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:29,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:29,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-11-21 01:04:29,470 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1499297768, now seen corresponding path program 215 times [2021-11-21 01:04:29,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:29,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174670156] [2021-11-21 01:04:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:29,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:30,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:30,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174670156] [2021-11-21 01:04:30,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174670156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:30,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:30,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:30,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527237408] [2021-11-21 01:04:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:30,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:30,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:30,120 INFO L87 Difference]: Start difference. First operand 778 states and 2201 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:33,551 INFO L93 Difference]: Finished difference Result 2165 states and 5576 transitions. [2021-11-21 01:04:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:04:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:33,554 INFO L225 Difference]: With dead ends: 2165 [2021-11-21 01:04:33,554 INFO L226 Difference]: Without dead ends: 2151 [2021-11-21 01:04:33,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:04:33,554 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 297 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:33,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 0 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:04:33,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-11-21 01:04:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 772. [2021-11-21 01:04:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 2.827496757457847) internal successors, (2180), 771 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2180 transitions. [2021-11-21 01:04:33,571 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2180 transitions. Word has length 36 [2021-11-21 01:04:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:33,571 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 2180 transitions. [2021-11-21 01:04:33,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2180 transitions. [2021-11-21 01:04:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:33,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:33,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:33,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-11-21 01:04:33,572 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash -217370706, now seen corresponding path program 216 times [2021-11-21 01:04:33,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381902806] [2021-11-21 01:04:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:33,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:34,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:34,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381902806] [2021-11-21 01:04:34,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381902806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:34,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:34,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:34,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345198911] [2021-11-21 01:04:34,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:34,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:34,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:34,017 INFO L87 Difference]: Start difference. First operand 772 states and 2180 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:39,930 INFO L93 Difference]: Finished difference Result 2492 states and 6419 transitions. [2021-11-21 01:04:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 01:04:39,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:39,934 INFO L225 Difference]: With dead ends: 2492 [2021-11-21 01:04:39,934 INFO L226 Difference]: Without dead ends: 2478 [2021-11-21 01:04:39,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=495, Invalid=1397, Unknown=0, NotChecked=0, Total=1892 [2021-11-21 01:04:39,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 342 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:39,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 0 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:04:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-11-21 01:04:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 784. [2021-11-21 01:04:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 2.8275862068965516) internal successors, (2214), 783 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2214 transitions. [2021-11-21 01:04:39,954 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2214 transitions. Word has length 36 [2021-11-21 01:04:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:39,954 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2214 transitions. [2021-11-21 01:04:39,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2214 transitions. [2021-11-21 01:04:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:39,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:39,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:39,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-11-21 01:04:39,955 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1127792878, now seen corresponding path program 217 times [2021-11-21 01:04:39,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:39,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046715558] [2021-11-21 01:04:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:39,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:40,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:40,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046715558] [2021-11-21 01:04:40,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046715558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:40,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:40,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:40,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429527120] [2021-11-21 01:04:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:40,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:40,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:40,386 INFO L87 Difference]: Start difference. First operand 784 states and 2214 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:44,414 INFO L93 Difference]: Finished difference Result 2544 states and 6545 transitions. [2021-11-21 01:04:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-21 01:04:44,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:44,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:44,417 INFO L225 Difference]: With dead ends: 2544 [2021-11-21 01:04:44,418 INFO L226 Difference]: Without dead ends: 2530 [2021-11-21 01:04:44,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=638, Invalid=2014, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 01:04:44,418 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 383 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:44,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 0 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:04:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-21 01:04:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 786. [2021-11-21 01:04:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 2.831847133757962) internal successors, (2223), 785 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2223 transitions. [2021-11-21 01:04:44,437 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2223 transitions. Word has length 36 [2021-11-21 01:04:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:44,438 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 2223 transitions. [2021-11-21 01:04:44,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2223 transitions. [2021-11-21 01:04:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:44,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:44,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:44,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-11-21 01:04:44,439 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash 198750120, now seen corresponding path program 218 times [2021-11-21 01:04:44,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:44,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30866915] [2021-11-21 01:04:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:44,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:44,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30866915] [2021-11-21 01:04:44,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30866915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:44,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:44,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:04:44,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844037687] [2021-11-21 01:04:44,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:44,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:04:44,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:44,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:04:44,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:04:44,962 INFO L87 Difference]: Start difference. First operand 786 states and 2223 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:53,985 INFO L93 Difference]: Finished difference Result 2681 states and 6964 transitions. [2021-11-21 01:04:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-21 01:04:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:53,989 INFO L225 Difference]: With dead ends: 2681 [2021-11-21 01:04:53,989 INFO L226 Difference]: Without dead ends: 2667 [2021-11-21 01:04:53,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=846, Invalid=3060, Unknown=0, NotChecked=0, Total=3906 [2021-11-21 01:04:53,989 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 347 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:53,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 0 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:04:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2021-11-21 01:04:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 780. [2021-11-21 01:04:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.8241335044929397) internal successors, (2200), 779 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2200 transitions. [2021-11-21 01:04:54,009 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2200 transitions. Word has length 36 [2021-11-21 01:04:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:54,010 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 2200 transitions. [2021-11-21 01:04:54,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2200 transitions. [2021-11-21 01:04:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:54,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:54,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-11-21 01:04:54,011 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1010500554, now seen corresponding path program 219 times [2021-11-21 01:04:54,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:54,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923912868] [2021-11-21 01:04:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:54,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:54,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:54,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923912868] [2021-11-21 01:04:54,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923912868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:54,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:54,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:04:54,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073682851] [2021-11-21 01:04:54,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:54,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:04:54,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:04:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:04:54,612 INFO L87 Difference]: Start difference. First operand 780 states and 2200 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:55,649 INFO L93 Difference]: Finished difference Result 2249 states and 5798 transitions. [2021-11-21 01:04:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:04:55,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:55,653 INFO L225 Difference]: With dead ends: 2249 [2021-11-21 01:04:55,653 INFO L226 Difference]: Without dead ends: 2235 [2021-11-21 01:04:55,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:04:55,653 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 283 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:55,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 0 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:04:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2021-11-21 01:04:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 786. [2021-11-21 01:04:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 2.831847133757962) internal successors, (2223), 785 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2223 transitions. [2021-11-21 01:04:55,671 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2223 transitions. Word has length 36 [2021-11-21 01:04:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:55,672 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 2223 transitions. [2021-11-21 01:04:55,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:55,672 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2223 transitions. [2021-11-21 01:04:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:55,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:55,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:55,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-11-21 01:04:55,673 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1939543312, now seen corresponding path program 220 times [2021-11-21 01:04:55,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:55,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951594243] [2021-11-21 01:04:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:55,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:56,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951594243] [2021-11-21 01:04:56,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951594243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:56,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:56,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:04:56,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528893065] [2021-11-21 01:04:56,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:56,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:04:56,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:04:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:04:56,035 INFO L87 Difference]: Start difference. First operand 786 states and 2223 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:57,039 INFO L93 Difference]: Finished difference Result 2221 states and 5752 transitions. [2021-11-21 01:04:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:04:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:57,042 INFO L225 Difference]: With dead ends: 2221 [2021-11-21 01:04:57,042 INFO L226 Difference]: Without dead ends: 2207 [2021-11-21 01:04:57,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:04:57,043 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 257 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:57,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 0 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:04:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-21 01:04:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 768. [2021-11-21 01:04:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 2.8292046936114734) internal successors, (2170), 767 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2170 transitions. [2021-11-21 01:04:57,059 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2170 transitions. Word has length 36 [2021-11-21 01:04:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:57,059 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 2170 transitions. [2021-11-21 01:04:57,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2170 transitions. [2021-11-21 01:04:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:57,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:57,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:57,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-11-21 01:04:57,061 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1190848116, now seen corresponding path program 221 times [2021-11-21 01:04:57,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:57,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641783975] [2021-11-21 01:04:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:57,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:04:57,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:57,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641783975] [2021-11-21 01:04:57,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641783975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:57,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:57,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:04:57,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181236918] [2021-11-21 01:04:57,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:57,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:04:57,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:04:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:04:57,507 INFO L87 Difference]: Start difference. First operand 768 states and 2170 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:58,790 INFO L93 Difference]: Finished difference Result 2185 states and 5664 transitions. [2021-11-21 01:04:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:04:58,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-21 01:04:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:58,793 INFO L225 Difference]: With dead ends: 2185 [2021-11-21 01:04:58,794 INFO L226 Difference]: Without dead ends: 2171 [2021-11-21 01:04:58,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:04:58,794 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 307 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:58,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 0 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:04:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-11-21 01:04:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 774. [2021-11-21 01:04:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 2.8292367399741267) internal successors, (2187), 773 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2187 transitions. [2021-11-21 01:04:58,811 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2187 transitions. Word has length 36 [2021-11-21 01:04:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:58,811 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 2187 transitions. [2021-11-21 01:04:58,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2187 transitions. [2021-11-21 01:04:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:04:58,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:58,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:58,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-11-21 01:04:58,812 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 01:04:58,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash -640174760, now seen corresponding path program 222 times [2021-11-21 01:04:58,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:58,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031372867] [2021-11-21 01:04:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:58,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:04:59,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:59,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031372867] [2021-11-21 01:04:59,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031372867] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:04:59,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591264597] [2021-11-21 01:04:59,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:04:59,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:04:59,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:04:59,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:04:59,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3458757e-c8d7-4856-9571-5f190551c511/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:04:59,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:04:59,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:04:59,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:04:59,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:05:16,866 WARN L227 SmtUtils]: Spent 17.30s on a formula simplification. DAG size of input: 77 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:05:17,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:05:17,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 215 treesize of output 451 [2021-11-21 01:05:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:05:20,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:05:20,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591264597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:20,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:05:20,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-11-21 01:05:20,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188475174] [2021-11-21 01:05:20,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:20,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:05:20,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:05:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:05:20,245 INFO L87 Difference]: Start difference. First operand 774 states and 2187 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:27,589 WARN L227 SmtUtils]: Spent 7.16s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)