./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:47:30,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:47:30,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:47:30,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:47:30,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:47:30,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:47:30,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:47:30,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:47:30,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:47:30,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:47:30,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:47:30,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:47:30,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:47:30,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:47:30,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:47:30,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:47:30,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:47:30,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:47:30,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:47:30,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:47:30,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:47:30,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:47:30,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:47:30,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:47:30,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:47:30,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:47:30,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:47:30,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:47:30,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:47:30,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:47:30,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:47:30,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:47:30,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:47:30,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:47:30,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:47:30,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:47:30,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:47:30,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:47:30,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:47:30,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:47:30,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:47:30,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:47:30,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:47:30,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:47:30,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:47:30,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:47:30,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:47:30,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:47:30,865 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:47:30,865 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:47:30,866 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:47:30,866 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:47:30,867 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:47:30,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:47:30,867 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:47:30,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:47:30,868 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:47:30,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:47:30,868 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:47:30,868 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:47:30,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:47:30,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:47:30,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:47:30,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:47:30,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:47:30,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:47:30,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:47:30,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:47:30,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:47:30,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:47:30,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:47:30,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:47:30,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:47:30,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:47:30,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:47:30,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:47:30,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:47:30,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:47:30,874 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:47:30,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:47:30,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:47:30,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:47:30,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:47:30,875 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_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2021-11-25 17:47:31,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:47:31,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:47:31,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:47:31,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:47:31,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:47:31,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2021-11-25 17:47:31,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/data/08d932e93/eb81223751bc4934b484c844fb48f02d/FLAGa469ad0d2 [2021-11-25 17:47:31,723 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:47:31,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2021-11-25 17:47:31,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/data/08d932e93/eb81223751bc4934b484c844fb48f02d/FLAGa469ad0d2 [2021-11-25 17:47:32,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/data/08d932e93/eb81223751bc4934b484c844fb48f02d [2021-11-25 17:47:32,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:47:32,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:47:32,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:47:32,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:47:32,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:47:32,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca6ca22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32, skipping insertion in model container [2021-11-25 17:47:32,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:47:32,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:47:32,377 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_3276987e-56d2-4959-b01e-6e651c4f7776/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2021-11-25 17:47:32,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:47:32,411 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:47:32,479 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_3276987e-56d2-4959-b01e-6e651c4f7776/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2021-11-25 17:47:32,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:47:32,509 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:47:32,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32 WrapperNode [2021-11-25 17:47:32,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:47:32,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:47:32,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:47:32,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:47:32,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,597 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2021-11-25 17:47:32,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:47:32,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:47:32,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:47:32,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:47:32,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:47:32,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:47:32,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:47:32,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:47:32,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (1/1) ... [2021-11-25 17:47:32,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:47:32,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:47:32,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:47:32,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:47:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:47:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:47:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:47:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:47:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 17:47:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 17:47:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-25 17:47:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-25 17:47:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-25 17:47:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-25 17:47:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:47:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:47:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:47:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:47:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:47:32,773 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 17:47:32,877 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:47:32,879 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:47:33,622 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:47:33,644 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:47:33,644 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 17:47:33,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:47:33 BoogieIcfgContainer [2021-11-25 17:47:33,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:47:33,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:47:33,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:47:33,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:47:33,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:47:32" (1/3) ... [2021-11-25 17:47:33,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e72ed52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:47:33, skipping insertion in model container [2021-11-25 17:47:33,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:32" (2/3) ... [2021-11-25 17:47:33,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e72ed52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:47:33, skipping insertion in model container [2021-11-25 17:47:33,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:47:33" (3/3) ... [2021-11-25 17:47:33,661 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2021-11-25 17:47:33,666 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 17:47:33,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:47:33,667 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:47:33,667 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 17:47:33,740 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,741 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,741 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,741 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,741 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,741 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,742 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,742 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,742 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,750 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,751 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,751 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,751 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,751 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,752 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,752 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,752 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,753 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,753 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,753 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,753 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,753 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,754 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,755 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,756 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,757 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,758 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,762 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,790 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,801 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,803 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,803 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,803 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,824 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,833 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,833 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,833 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,833 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,833 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,833 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,834 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,835 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,835 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,835 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,835 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,835 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,835 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,836 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,837 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,837 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,837 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,837 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,837 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,837 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,838 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,839 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,840 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,841 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,842 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,843 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,844 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,844 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,844 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,844 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,845 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,852 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,852 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,852 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,862 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,863 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,864 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,865 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,872 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,872 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,872 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,873 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:47:33,879 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-25 17:47:33,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:47:33,945 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 [2021-11-25 17:47:33,945 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 17:47:33,984 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 17:47:33,997 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 574 transitions, 1172 flow [2021-11-25 17:47:34,000 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 574 transitions, 1172 flow [2021-11-25 17:47:34,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 537 places, 574 transitions, 1172 flow [2021-11-25 17:47:34,294 INFO L129 PetriNetUnfolder]: 47/571 cut-off events. [2021-11-25 17:47:34,294 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-25 17:47:34,304 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. [2021-11-25 17:47:34,331 INFO L116 LiptonReduction]: Number of co-enabled transitions 29184 [2021-11-25 17:47:56,140 INFO L131 LiptonReduction]: Checked pairs total: 32641 [2021-11-25 17:47:56,140 INFO L133 LiptonReduction]: Total number of compositions: 691 [2021-11-25 17:47:56,148 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 116 flow [2021-11-25 17:47:56,181 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) [2021-11-25 17:47:56,185 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) [2021-11-25 17:47:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 17:47:56,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:56,201 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] [2021-11-25 17:47:56,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash 883599033, now seen corresponding path program 1 times [2021-11-25 17:47:56,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:56,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873025938] [2021-11-25 17:47:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:56,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:47:56,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:56,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873025938] [2021-11-25 17:47:56,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873025938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:56,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:56,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:56,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342175273] [2021-11-25 17:47:56,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:56,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:47:56,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:56,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:47:56,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:47:56,606 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) [2021-11-25 17:47:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:56,808 INFO L93 Difference]: Finished difference Result 396 states and 1234 transitions. [2021-11-25 17:47:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:47:56,810 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 [2021-11-25 17:47:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:56,835 INFO L225 Difference]: With dead ends: 396 [2021-11-25 17:47:56,836 INFO L226 Difference]: Without dead ends: 396 [2021-11-25 17:47:56,836 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 [2021-11-25 17:47:56,839 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 [2021-11-25 17:47:56,840 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] [2021-11-25 17:47:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-25 17:47:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2021-11-25 17:47:56,905 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) [2021-11-25 17:47:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1234 transitions. [2021-11-25 17:47:56,910 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1234 transitions. Word has length 28 [2021-11-25 17:47:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:56,911 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 1234 transitions. [2021-11-25 17:47:56,912 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) [2021-11-25 17:47:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1234 transitions. [2021-11-25 17:47:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 17:47:56,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:56,917 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] [2021-11-25 17:47:56,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:47:56,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1978716436, now seen corresponding path program 1 times [2021-11-25 17:47:56,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:56,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558085410] [2021-11-25 17:47:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:56,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:47:57,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558085410] [2021-11-25 17:47:57,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558085410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:57,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:57,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:57,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586152267] [2021-11-25 17:47:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:57,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:47:57,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:47:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:47:57,109 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) [2021-11-25 17:47:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:57,218 INFO L93 Difference]: Finished difference Result 446 states and 1388 transitions. [2021-11-25 17:47:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:47:57,218 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 [2021-11-25 17:47:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:57,225 INFO L225 Difference]: With dead ends: 446 [2021-11-25 17:47:57,225 INFO L226 Difference]: Without dead ends: 446 [2021-11-25 17:47:57,226 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 [2021-11-25 17:47:57,229 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 [2021-11-25 17:47:57,230 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] [2021-11-25 17:47:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-25 17:47:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-25 17:47:57,276 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) [2021-11-25 17:47:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1388 transitions. [2021-11-25 17:47:57,287 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1388 transitions. Word has length 29 [2021-11-25 17:47:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:57,288 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1388 transitions. [2021-11-25 17:47:57,288 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) [2021-11-25 17:47:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1388 transitions. [2021-11-25 17:47:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 17:47:57,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:57,293 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] [2021-11-25 17:47:57,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:47:57,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -370491902, now seen corresponding path program 1 times [2021-11-25 17:47:57,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471202395] [2021-11-25 17:47:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:57,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:47:57,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:57,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471202395] [2021-11-25 17:47:57,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471202395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:57,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:57,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:47:57,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229069299] [2021-11-25 17:47:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:57,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:47:57,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:47:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:47:57,434 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) [2021-11-25 17:47:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:57,523 INFO L93 Difference]: Finished difference Result 447 states and 1389 transitions. [2021-11-25 17:47:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:47:57,524 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 [2021-11-25 17:47:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:57,528 INFO L225 Difference]: With dead ends: 447 [2021-11-25 17:47:57,528 INFO L226 Difference]: Without dead ends: 447 [2021-11-25 17:47:57,528 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 [2021-11-25 17:47:57,532 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 [2021-11-25 17:47:57,533 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] [2021-11-25 17:47:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-25 17:47:57,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-25 17:47:57,556 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) [2021-11-25 17:47:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1389 transitions. [2021-11-25 17:47:57,559 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1389 transitions. Word has length 30 [2021-11-25 17:47:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:57,559 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1389 transitions. [2021-11-25 17:47:57,559 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) [2021-11-25 17:47:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1389 transitions. [2021-11-25 17:47:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 17:47:57,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:57,562 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] [2021-11-25 17:47:57,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:47:57,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:57,563 INFO L85 PathProgramCache]: Analyzing trace with hash -581274643, now seen corresponding path program 1 times [2021-11-25 17:47:57,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:57,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160847402] [2021-11-25 17:47:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:57,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:47:57,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:57,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160847402] [2021-11-25 17:47:57,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160847402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:57,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:57,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:57,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422436216] [2021-11-25 17:47:57,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:57,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:47:57,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:47:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:47:57,696 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) [2021-11-25 17:47:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:57,795 INFO L93 Difference]: Finished difference Result 448 states and 1390 transitions. [2021-11-25 17:47:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:47:57,796 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 [2021-11-25 17:47:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:57,800 INFO L225 Difference]: With dead ends: 448 [2021-11-25 17:47:57,800 INFO L226 Difference]: Without dead ends: 448 [2021-11-25 17:47:57,800 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 [2021-11-25 17:47:57,803 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 [2021-11-25 17:47:57,804 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] [2021-11-25 17:47:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-25 17:47:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-11-25 17:47:57,823 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) [2021-11-25 17:47:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1390 transitions. [2021-11-25 17:47:57,826 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1390 transitions. Word has length 31 [2021-11-25 17:47:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:57,827 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1390 transitions. [2021-11-25 17:47:57,827 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) [2021-11-25 17:47:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1390 transitions. [2021-11-25 17:47:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 17:47:57,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:57,832 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] [2021-11-25 17:47:57,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:47:57,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash -733896230, now seen corresponding path program 1 times [2021-11-25 17:47:57,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:57,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423370579] [2021-11-25 17:47:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:57,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 17:47:57,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:57,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423370579] [2021-11-25 17:47:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423370579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:57,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:57,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:57,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963411] [2021-11-25 17:47:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:57,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:47:57,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:47:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:47:57,971 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) [2021-11-25 17:47:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:58,064 INFO L93 Difference]: Finished difference Result 449 states and 1391 transitions. [2021-11-25 17:47:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:47:58,064 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 [2021-11-25 17:47:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:58,069 INFO L225 Difference]: With dead ends: 449 [2021-11-25 17:47:58,069 INFO L226 Difference]: Without dead ends: 449 [2021-11-25 17:47:58,069 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 [2021-11-25 17:47:58,071 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 [2021-11-25 17:47:58,071 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] [2021-11-25 17:47:58,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-25 17:47:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-25 17:47:58,119 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) [2021-11-25 17:47:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1391 transitions. [2021-11-25 17:47:58,123 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1391 transitions. Word has length 32 [2021-11-25 17:47:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:58,125 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 1391 transitions. [2021-11-25 17:47:58,125 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) [2021-11-25 17:47:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1391 transitions. [2021-11-25 17:47:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 17:47:58,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:58,128 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] [2021-11-25 17:47:58,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:47:58,128 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1101643312, now seen corresponding path program 1 times [2021-11-25 17:47:58,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:58,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851757593] [2021-11-25 17:47:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:58,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 17:47:58,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:58,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851757593] [2021-11-25 17:47:58,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851757593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:58,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:58,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:58,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599907188] [2021-11-25 17:47:58,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:58,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:47:58,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:58,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:47:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:47:58,240 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) [2021-11-25 17:47:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:58,336 INFO L93 Difference]: Finished difference Result 450 states and 1392 transitions. [2021-11-25 17:47:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:47:58,337 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 [2021-11-25 17:47:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:58,342 INFO L225 Difference]: With dead ends: 450 [2021-11-25 17:47:58,342 INFO L226 Difference]: Without dead ends: 450 [2021-11-25 17:47:58,342 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 [2021-11-25 17:47:58,343 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 [2021-11-25 17:47:58,344 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] [2021-11-25 17:47:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-25 17:47:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-25 17:47:58,361 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) [2021-11-25 17:47:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1392 transitions. [2021-11-25 17:47:58,365 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1392 transitions. Word has length 33 [2021-11-25 17:47:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:58,365 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1392 transitions. [2021-11-25 17:47:58,366 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) [2021-11-25 17:47:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1392 transitions. [2021-11-25 17:47:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 17:47:58,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:58,368 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] [2021-11-25 17:47:58,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:47:58,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 310986220, now seen corresponding path program 1 times [2021-11-25 17:47:58,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:58,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588470783] [2021-11-25 17:47:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:58,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:47:58,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588470783] [2021-11-25 17:47:58,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588470783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:58,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:58,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:58,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533127533] [2021-11-25 17:47:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:58,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:47:58,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:47:58,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:47:58,470 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) [2021-11-25 17:47:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:58,570 INFO L93 Difference]: Finished difference Result 451 states and 1393 transitions. [2021-11-25 17:47:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:47:58,570 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 [2021-11-25 17:47:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:58,575 INFO L225 Difference]: With dead ends: 451 [2021-11-25 17:47:58,575 INFO L226 Difference]: Without dead ends: 451 [2021-11-25 17:47:58,575 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 [2021-11-25 17:47:58,576 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 [2021-11-25 17:47:58,576 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] [2021-11-25 17:47:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-25 17:47:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-25 17:47:58,593 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) [2021-11-25 17:47:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1393 transitions. [2021-11-25 17:47:58,596 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1393 transitions. Word has length 34 [2021-11-25 17:47:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:58,597 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 1393 transitions. [2021-11-25 17:47:58,597 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) [2021-11-25 17:47:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1393 transitions. [2021-11-25 17:47:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 17:47:58,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:58,599 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] [2021-11-25 17:47:58,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:47:58,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1897616594, now seen corresponding path program 1 times [2021-11-25 17:47:58,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:58,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767256497] [2021-11-25 17:47:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:58,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 17:47:58,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:58,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767256497] [2021-11-25 17:47:58,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767256497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:58,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:58,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:58,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759356180] [2021-11-25 17:47:58,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:58,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:47:58,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:47:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:47:58,743 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) [2021-11-25 17:47:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:47:58,839 INFO L93 Difference]: Finished difference Result 452 states and 1394 transitions. [2021-11-25 17:47:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:47:58,839 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 [2021-11-25 17:47:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:47:58,844 INFO L225 Difference]: With dead ends: 452 [2021-11-25 17:47:58,844 INFO L226 Difference]: Without dead ends: 452 [2021-11-25 17:47:58,844 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 [2021-11-25 17:47:58,846 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 [2021-11-25 17:47:58,846 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] [2021-11-25 17:47:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-25 17:47:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-11-25 17:47:58,862 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) [2021-11-25 17:47:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1394 transitions. [2021-11-25 17:47:58,865 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1394 transitions. Word has length 35 [2021-11-25 17:47:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:47:58,865 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1394 transitions. [2021-11-25 17:47:58,865 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) [2021-11-25 17:47:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1394 transitions. [2021-11-25 17:47:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:47:58,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:58,869 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] [2021-11-25 17:47:58,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:47:58,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:47:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash -694410322, now seen corresponding path program 1 times [2021-11-25 17:47:58,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:58,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482476662] [2021-11-25 17:47:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:58,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:01,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:01,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482476662] [2021-11-25 17:48:01,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482476662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:01,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:01,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:01,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700884751] [2021-11-25 17:48:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:01,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:01,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:01,109 INFO L87 Difference]: Start difference. First operand 452 states and 1394 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) [2021-11-25 17:48:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:02,169 INFO L93 Difference]: Finished difference Result 1041 states and 3076 transitions. [2021-11-25 17:48:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:02,170 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 [2021-11-25 17:48:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:02,179 INFO L225 Difference]: With dead ends: 1041 [2021-11-25 17:48:02,179 INFO L226 Difference]: Without dead ends: 1034 [2021-11-25 17:48:02,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:48:02,180 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:02,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 0 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:48:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-11-25 17:48:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 470. [2021-11-25 17:48:02,204 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) [2021-11-25 17:48:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1442 transitions. [2021-11-25 17:48:02,207 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1442 transitions. Word has length 36 [2021-11-25 17:48:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:02,208 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1442 transitions. [2021-11-25 17:48:02,208 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) [2021-11-25 17:48:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1442 transitions. [2021-11-25 17:48:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:02,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:02,210 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] [2021-11-25 17:48:02,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:48:02,211 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1198470186, now seen corresponding path program 1 times [2021-11-25 17:48:02,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:02,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864575906] [2021-11-25 17:48:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:02,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:02,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:02,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864575906] [2021-11-25 17:48:02,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864575906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:02,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:02,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:02,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200748745] [2021-11-25 17:48:02,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:02,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:02,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:02,435 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) [2021-11-25 17:48:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:02,612 INFO L93 Difference]: Finished difference Result 756 states and 2282 transitions. [2021-11-25 17:48:02,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:48:02,613 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 [2021-11-25 17:48:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:02,620 INFO L225 Difference]: With dead ends: 756 [2021-11-25 17:48:02,620 INFO L226 Difference]: Without dead ends: 756 [2021-11-25 17:48:02,621 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 [2021-11-25 17:48:02,622 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 [2021-11-25 17:48:02,623 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] [2021-11-25 17:48:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-25 17:48:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 536. [2021-11-25 17:48:02,647 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) [2021-11-25 17:48:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1639 transitions. [2021-11-25 17:48:02,651 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1639 transitions. Word has length 36 [2021-11-25 17:48:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:02,653 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 1639 transitions. [2021-11-25 17:48:02,654 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) [2021-11-25 17:48:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1639 transitions. [2021-11-25 17:48:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:02,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:02,656 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] [2021-11-25 17:48:02,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:48:02,657 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:02,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1425177980, now seen corresponding path program 2 times [2021-11-25 17:48:02,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613121073] [2021-11-25 17:48:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:02,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:03,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:03,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613121073] [2021-11-25 17:48:03,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613121073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:03,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:03,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:03,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147140474] [2021-11-25 17:48:03,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:03,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:03,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:03,619 INFO L87 Difference]: Start difference. First operand 536 states and 1639 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) [2021-11-25 17:48:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:04,677 INFO L93 Difference]: Finished difference Result 1253 states and 3683 transitions. [2021-11-25 17:48:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:04,678 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 [2021-11-25 17:48:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:04,689 INFO L225 Difference]: With dead ends: 1253 [2021-11-25 17:48:04,689 INFO L226 Difference]: Without dead ends: 1246 [2021-11-25 17:48:04,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:48:04,690 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:04,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:48:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-11-25 17:48:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 554. [2021-11-25 17:48:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.08499095840868) internal successors, (1706), 553 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1706 transitions. [2021-11-25 17:48:04,722 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1706 transitions. Word has length 36 [2021-11-25 17:48:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:04,722 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1706 transitions. [2021-11-25 17:48:04,723 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) [2021-11-25 17:48:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1706 transitions. [2021-11-25 17:48:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:04,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:04,725 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] [2021-11-25 17:48:04,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:48:04,726 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1940746558, now seen corresponding path program 3 times [2021-11-25 17:48:04,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:04,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191604734] [2021-11-25 17:48:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:04,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:05,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:05,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191604734] [2021-11-25 17:48:05,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191604734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:05,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:05,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:05,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634136617] [2021-11-25 17:48:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:05,481 INFO L87 Difference]: Start difference. First operand 554 states and 1706 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) [2021-11-25 17:48:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:06,431 INFO L93 Difference]: Finished difference Result 1263 states and 3709 transitions. [2021-11-25 17:48:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:06,432 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 [2021-11-25 17:48:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:06,442 INFO L225 Difference]: With dead ends: 1263 [2021-11-25 17:48:06,443 INFO L226 Difference]: Without dead ends: 1256 [2021-11-25 17:48:06,443 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 [2021-11-25 17:48:06,444 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:06,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 0 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:48:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-11-25 17:48:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 562. [2021-11-25 17:48:06,473 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) [2021-11-25 17:48:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1724 transitions. [2021-11-25 17:48:06,476 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1724 transitions. Word has length 36 [2021-11-25 17:48:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:06,476 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1724 transitions. [2021-11-25 17:48:06,476 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) [2021-11-25 17:48:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1724 transitions. [2021-11-25 17:48:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:06,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:06,479 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] [2021-11-25 17:48:06,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:48:06,479 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1132061336, now seen corresponding path program 2 times [2021-11-25 17:48:06,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:06,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643665236] [2021-11-25 17:48:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:06,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:06,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:06,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643665236] [2021-11-25 17:48:06,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643665236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:06,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:06,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:06,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512776033] [2021-11-25 17:48:06,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:06,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:06,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:06,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:06,649 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) [2021-11-25 17:48:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:06,780 INFO L93 Difference]: Finished difference Result 704 states and 2076 transitions. [2021-11-25 17:48:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:48:06,781 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 [2021-11-25 17:48:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:06,787 INFO L225 Difference]: With dead ends: 704 [2021-11-25 17:48:06,787 INFO L226 Difference]: Without dead ends: 682 [2021-11-25 17:48:06,787 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 [2021-11-25 17:48:06,788 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 [2021-11-25 17:48:06,788 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] [2021-11-25 17:48:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-25 17:48:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 562. [2021-11-25 17:48:06,809 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) [2021-11-25 17:48:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1716 transitions. [2021-11-25 17:48:06,812 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1716 transitions. Word has length 36 [2021-11-25 17:48:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:06,812 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1716 transitions. [2021-11-25 17:48:06,813 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) [2021-11-25 17:48:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1716 transitions. [2021-11-25 17:48:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:06,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:06,815 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] [2021-11-25 17:48:06,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:48:06,816 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:06,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1887269074, now seen corresponding path program 1 times [2021-11-25 17:48:06,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:06,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465024945] [2021-11-25 17:48:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:06,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:06,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:06,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465024945] [2021-11-25 17:48:06,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465024945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:06,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:06,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:06,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692725770] [2021-11-25 17:48:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:06,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:06,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:06,957 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) [2021-11-25 17:48:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:07,137 INFO L93 Difference]: Finished difference Result 860 states and 2510 transitions. [2021-11-25 17:48:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:48:07,137 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 [2021-11-25 17:48:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:07,144 INFO L225 Difference]: With dead ends: 860 [2021-11-25 17:48:07,144 INFO L226 Difference]: Without dead ends: 827 [2021-11-25 17:48:07,145 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 [2021-11-25 17:48:07,145 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 [2021-11-25 17:48:07,145 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] [2021-11-25 17:48:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-11-25 17:48:07,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 607. [2021-11-25 17:48:07,168 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) [2021-11-25 17:48:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1833 transitions. [2021-11-25 17:48:07,171 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1833 transitions. Word has length 36 [2021-11-25 17:48:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:07,171 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 1833 transitions. [2021-11-25 17:48:07,172 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) [2021-11-25 17:48:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1833 transitions. [2021-11-25 17:48:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:07,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:07,174 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] [2021-11-25 17:48:07,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 17:48:07,175 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1383209210, now seen corresponding path program 1 times [2021-11-25 17:48:07,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:07,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035014567] [2021-11-25 17:48:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:07,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:07,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035014567] [2021-11-25 17:48:07,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035014567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:07,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:48:07,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116260339] [2021-11-25 17:48:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:48:07,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:48:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:48:07,937 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) [2021-11-25 17:48:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:08,670 INFO L93 Difference]: Finished difference Result 680 states and 1968 transitions. [2021-11-25 17:48:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:08,670 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 [2021-11-25 17:48:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:08,676 INFO L225 Difference]: With dead ends: 680 [2021-11-25 17:48:08,676 INFO L226 Difference]: Without dead ends: 663 [2021-11-25 17:48:08,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:48:08,677 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:08,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:48:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-11-25 17:48:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 641. [2021-11-25 17:48:08,700 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) [2021-11-25 17:48:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1904 transitions. [2021-11-25 17:48:08,703 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1904 transitions. Word has length 36 [2021-11-25 17:48:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:08,703 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1904 transitions. [2021-11-25 17:48:08,704 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) [2021-11-25 17:48:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1904 transitions. [2021-11-25 17:48:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:08,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:08,706 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] [2021-11-25 17:48:08,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 17:48:08,707 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:08,707 INFO L85 PathProgramCache]: Analyzing trace with hash -606833678, now seen corresponding path program 2 times [2021-11-25 17:48:08,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:08,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085179673] [2021-11-25 17:48:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:08,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:09,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:09,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085179673] [2021-11-25 17:48:09,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085179673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:09,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:09,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:48:09,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114671517] [2021-11-25 17:48:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:48:09,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:48:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:48:09,538 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) [2021-11-25 17:48:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:10,004 INFO L93 Difference]: Finished difference Result 660 states and 1934 transitions. [2021-11-25 17:48:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:10,005 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 [2021-11-25 17:48:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:10,011 INFO L225 Difference]: With dead ends: 660 [2021-11-25 17:48:10,011 INFO L226 Difference]: Without dead ends: 649 [2021-11-25 17:48:10,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:48:10,012 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 [2021-11-25 17:48:10,012 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] [2021-11-25 17:48:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-11-25 17:48:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 643. [2021-11-25 17:48:10,032 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) [2021-11-25 17:48:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1907 transitions. [2021-11-25 17:48:10,035 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1907 transitions. Word has length 36 [2021-11-25 17:48:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:10,036 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1907 transitions. [2021-11-25 17:48:10,036 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) [2021-11-25 17:48:10,036 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1907 transitions. [2021-11-25 17:48:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:10,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:10,039 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] [2021-11-25 17:48:10,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 17:48:10,039 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1557283692, now seen corresponding path program 3 times [2021-11-25 17:48:10,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424036022] [2021-11-25 17:48:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:10,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:10,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:10,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424036022] [2021-11-25 17:48:10,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424036022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:10,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:10,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:48:10,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434637578] [2021-11-25 17:48:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:10,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:48:10,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:48:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:48:10,792 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) [2021-11-25 17:48:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:11,275 INFO L93 Difference]: Finished difference Result 658 states and 1928 transitions. [2021-11-25 17:48:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:11,276 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 [2021-11-25 17:48:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:11,282 INFO L225 Difference]: With dead ends: 658 [2021-11-25 17:48:11,282 INFO L226 Difference]: Without dead ends: 639 [2021-11-25 17:48:11,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:48:11,283 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:11,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:48:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-25 17:48:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 627. [2021-11-25 17:48:11,303 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) [2021-11-25 17:48:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1863 transitions. [2021-11-25 17:48:11,306 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1863 transitions. Word has length 36 [2021-11-25 17:48:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:11,307 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1863 transitions. [2021-11-25 17:48:11,307 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) [2021-11-25 17:48:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1863 transitions. [2021-11-25 17:48:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:11,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:11,310 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] [2021-11-25 17:48:11,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 17:48:11,310 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1527350230, now seen corresponding path program 4 times [2021-11-25 17:48:11,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:11,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107707506] [2021-11-25 17:48:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:11,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:11,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:11,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107707506] [2021-11-25 17:48:11,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107707506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:11,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:11,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:48:11,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566261091] [2021-11-25 17:48:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:11,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:48:11,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:48:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:48:11,873 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) [2021-11-25 17:48:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:12,399 INFO L93 Difference]: Finished difference Result 656 states and 1923 transitions. [2021-11-25 17:48:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:12,399 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 [2021-11-25 17:48:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:12,405 INFO L225 Difference]: With dead ends: 656 [2021-11-25 17:48:12,405 INFO L226 Difference]: Without dead ends: 645 [2021-11-25 17:48:12,405 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 [2021-11-25 17:48:12,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2021-11-25 17:48:12,406 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] [2021-11-25 17:48:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-11-25 17:48:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 641. [2021-11-25 17:48:12,427 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) [2021-11-25 17:48:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1900 transitions. [2021-11-25 17:48:12,429 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1900 transitions. Word has length 36 [2021-11-25 17:48:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:12,430 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1900 transitions. [2021-11-25 17:48:12,430 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) [2021-11-25 17:48:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1900 transitions. [2021-11-25 17:48:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:12,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:12,433 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] [2021-11-25 17:48:12,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 17:48:12,433 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:12,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1817167052, now seen corresponding path program 5 times [2021-11-25 17:48:12,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:12,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697721824] [2021-11-25 17:48:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:12,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:13,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:13,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697721824] [2021-11-25 17:48:13,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697721824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:13,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:13,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:48:13,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481504758] [2021-11-25 17:48:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:13,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:48:13,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:48:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:48:13,195 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) [2021-11-25 17:48:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:13,734 INFO L93 Difference]: Finished difference Result 654 states and 1917 transitions. [2021-11-25 17:48:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:13,735 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 [2021-11-25 17:48:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:13,741 INFO L225 Difference]: With dead ends: 654 [2021-11-25 17:48:13,741 INFO L226 Difference]: Without dead ends: 643 [2021-11-25 17:48:13,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:48:13,742 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:13,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:48:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-25 17:48:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 639. [2021-11-25 17:48:13,800 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) [2021-11-25 17:48:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1893 transitions. [2021-11-25 17:48:13,803 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1893 transitions. Word has length 36 [2021-11-25 17:48:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:13,803 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 1893 transitions. [2021-11-25 17:48:13,803 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) [2021-11-25 17:48:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1893 transitions. [2021-11-25 17:48:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:13,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:13,806 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] [2021-11-25 17:48:13,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 17:48:13,807 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash 487049394, now seen corresponding path program 6 times [2021-11-25 17:48:13,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:13,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146926312] [2021-11-25 17:48:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:13,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:14,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:14,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146926312] [2021-11-25 17:48:14,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146926312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:14,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:14,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:48:14,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161635486] [2021-11-25 17:48:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:14,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:48:14,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:48:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:48:14,429 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) [2021-11-25 17:48:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:15,021 INFO L93 Difference]: Finished difference Result 690 states and 1978 transitions. [2021-11-25 17:48:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:15,021 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 [2021-11-25 17:48:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:15,027 INFO L225 Difference]: With dead ends: 690 [2021-11-25 17:48:15,027 INFO L226 Difference]: Without dead ends: 665 [2021-11-25 17:48:15,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:48:15,028 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:15,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:48:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-25 17:48:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 649. [2021-11-25 17:48:15,050 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) [2021-11-25 17:48:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1887 transitions. [2021-11-25 17:48:15,053 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1887 transitions. Word has length 36 [2021-11-25 17:48:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:15,053 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 1887 transitions. [2021-11-25 17:48:15,054 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) [2021-11-25 17:48:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1887 transitions. [2021-11-25 17:48:15,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:15,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:15,056 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] [2021-11-25 17:48:15,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 17:48:15,057 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash 187194346, now seen corresponding path program 2 times [2021-11-25 17:48:15,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:15,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296887647] [2021-11-25 17:48:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:15,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:15,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:15,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296887647] [2021-11-25 17:48:15,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296887647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:15,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:15,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:15,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675011787] [2021-11-25 17:48:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:15,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:15,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:15,181 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) [2021-11-25 17:48:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:15,349 INFO L93 Difference]: Finished difference Result 1021 states and 2932 transitions. [2021-11-25 17:48:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:48:15,349 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 [2021-11-25 17:48:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:15,358 INFO L225 Difference]: With dead ends: 1021 [2021-11-25 17:48:15,358 INFO L226 Difference]: Without dead ends: 1021 [2021-11-25 17:48:15,358 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 [2021-11-25 17:48:15,359 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 [2021-11-25 17:48:15,360 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] [2021-11-25 17:48:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-25 17:48:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 737. [2021-11-25 17:48:15,385 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) [2021-11-25 17:48:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 2141 transitions. [2021-11-25 17:48:15,389 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 2141 transitions. Word has length 36 [2021-11-25 17:48:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:15,390 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 2141 transitions. [2021-11-25 17:48:15,390 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) [2021-11-25 17:48:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 2141 transitions. [2021-11-25 17:48:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:15,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:15,393 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] [2021-11-25 17:48:15,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 17:48:15,394 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:15,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2130670140, now seen corresponding path program 3 times [2021-11-25 17:48:15,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:15,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832629332] [2021-11-25 17:48:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:15,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:15,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:15,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832629332] [2021-11-25 17:48:15,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832629332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:15,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:15,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686808201] [2021-11-25 17:48:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:15,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:15,520 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) [2021-11-25 17:48:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:15,656 INFO L93 Difference]: Finished difference Result 914 states and 2579 transitions. [2021-11-25 17:48:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:48:15,657 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 [2021-11-25 17:48:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:15,663 INFO L225 Difference]: With dead ends: 914 [2021-11-25 17:48:15,664 INFO L226 Difference]: Without dead ends: 892 [2021-11-25 17:48:15,665 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 [2021-11-25 17:48:15,665 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 [2021-11-25 17:48:15,666 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] [2021-11-25 17:48:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-25 17:48:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 737. [2021-11-25 17:48:15,689 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) [2021-11-25 17:48:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 2133 transitions. [2021-11-25 17:48:15,692 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 2133 transitions. Word has length 36 [2021-11-25 17:48:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:15,692 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 2133 transitions. [2021-11-25 17:48:15,692 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) [2021-11-25 17:48:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 2133 transitions. [2021-11-25 17:48:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:15,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:15,695 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] [2021-11-25 17:48:15,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 17:48:15,696 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash 177919302, now seen corresponding path program 3 times [2021-11-25 17:48:15,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439409562] [2021-11-25 17:48:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:15,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:15,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:15,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439409562] [2021-11-25 17:48:15,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439409562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:15,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:15,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:15,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298824266] [2021-11-25 17:48:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:15,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:15,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:15,823 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) [2021-11-25 17:48:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:16,001 INFO L93 Difference]: Finished difference Result 1042 states and 2864 transitions. [2021-11-25 17:48:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:48:16,002 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 [2021-11-25 17:48:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:16,014 INFO L225 Difference]: With dead ends: 1042 [2021-11-25 17:48:16,015 INFO L226 Difference]: Without dead ends: 965 [2021-11-25 17:48:16,015 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 [2021-11-25 17:48:16,016 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 [2021-11-25 17:48:16,016 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] [2021-11-25 17:48:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-11-25 17:48:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 800. [2021-11-25 17:48:16,042 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) [2021-11-25 17:48:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2283 transitions. [2021-11-25 17:48:16,045 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2283 transitions. Word has length 36 [2021-11-25 17:48:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:16,045 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2283 transitions. [2021-11-25 17:48:16,045 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) [2021-11-25 17:48:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2283 transitions. [2021-11-25 17:48:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:16,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:16,048 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] [2021-11-25 17:48:16,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 17:48:16,049 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash -653617658, now seen corresponding path program 4 times [2021-11-25 17:48:16,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:16,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608877181] [2021-11-25 17:48:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:16,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:16,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:16,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608877181] [2021-11-25 17:48:16,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608877181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:16,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:16,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:16,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147850368] [2021-11-25 17:48:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:16,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:16,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:16,733 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) [2021-11-25 17:48:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:20,313 INFO L93 Difference]: Finished difference Result 1860 states and 5091 transitions. [2021-11-25 17:48:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:48:20,313 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 [2021-11-25 17:48:20,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:20,328 INFO L225 Difference]: With dead ends: 1860 [2021-11-25 17:48:20,328 INFO L226 Difference]: Without dead ends: 1853 [2021-11-25 17:48:20,329 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 [2021-11-25 17:48:20,330 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 [2021-11-25 17:48:20,330 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] [2021-11-25 17:48:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-11-25 17:48:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 810. [2021-11-25 17:48:20,368 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) [2021-11-25 17:48:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2307 transitions. [2021-11-25 17:48:20,371 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2307 transitions. Word has length 36 [2021-11-25 17:48:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:20,372 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2307 transitions. [2021-11-25 17:48:20,372 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) [2021-11-25 17:48:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2307 transitions. [2021-11-25 17:48:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:20,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:20,375 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] [2021-11-25 17:48:20,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 17:48:20,375 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1810326762, now seen corresponding path program 5 times [2021-11-25 17:48:20,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:20,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932643645] [2021-11-25 17:48:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:20,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:21,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:21,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932643645] [2021-11-25 17:48:21,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932643645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:21,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:21,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:21,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592337150] [2021-11-25 17:48:21,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:21,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:21,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:21,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:21,011 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) [2021-11-25 17:48:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:21,844 INFO L93 Difference]: Finished difference Result 1721 states and 4668 transitions. [2021-11-25 17:48:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:21,845 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 [2021-11-25 17:48:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:21,851 INFO L225 Difference]: With dead ends: 1721 [2021-11-25 17:48:21,852 INFO L226 Difference]: Without dead ends: 1714 [2021-11-25 17:48:21,852 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 [2021-11-25 17:48:21,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:21,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:48:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-11-25 17:48:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 828. [2021-11-25 17:48:21,887 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) [2021-11-25 17:48:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2364 transitions. [2021-11-25 17:48:21,890 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2364 transitions. Word has length 36 [2021-11-25 17:48:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:21,891 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2364 transitions. [2021-11-25 17:48:21,891 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) [2021-11-25 17:48:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2364 transitions. [2021-11-25 17:48:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:21,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:21,894 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] [2021-11-25 17:48:21,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 17:48:21,895 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1047145978, now seen corresponding path program 6 times [2021-11-25 17:48:21,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:21,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185661640] [2021-11-25 17:48:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:21,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:22,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:22,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185661640] [2021-11-25 17:48:22,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185661640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:22,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:22,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:22,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758187383] [2021-11-25 17:48:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:22,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:22,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:22,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:22,536 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) [2021-11-25 17:48:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:25,471 INFO L93 Difference]: Finished difference Result 1938 states and 5324 transitions. [2021-11-25 17:48:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 17:48:25,472 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 [2021-11-25 17:48:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:25,477 INFO L225 Difference]: With dead ends: 1938 [2021-11-25 17:48:25,477 INFO L226 Difference]: Without dead ends: 1931 [2021-11-25 17:48:25,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:48:25,479 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:25,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:48:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-11-25 17:48:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 828. [2021-11-25 17:48:25,513 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) [2021-11-25 17:48:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2364 transitions. [2021-11-25 17:48:25,517 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2364 transitions. Word has length 36 [2021-11-25 17:48:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:25,517 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2364 transitions. [2021-11-25 17:48:25,517 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) [2021-11-25 17:48:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2364 transitions. [2021-11-25 17:48:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:25,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:25,520 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] [2021-11-25 17:48:25,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 17:48:25,521 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash -697444114, now seen corresponding path program 7 times [2021-11-25 17:48:25,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:25,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582595026] [2021-11-25 17:48:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:25,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:26,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582595026] [2021-11-25 17:48:26,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582595026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:26,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:26,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:26,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223487536] [2021-11-25 17:48:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:26,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:26,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:26,009 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) [2021-11-25 17:48:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:26,978 INFO L93 Difference]: Finished difference Result 1713 states and 4662 transitions. [2021-11-25 17:48:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:26,979 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 [2021-11-25 17:48:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:26,983 INFO L225 Difference]: With dead ends: 1713 [2021-11-25 17:48:26,983 INFO L226 Difference]: Without dead ends: 1706 [2021-11-25 17:48:26,984 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 [2021-11-25 17:48:26,984 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 235 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:26,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:48:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-25 17:48:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 810. [2021-11-25 17:48:27,027 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) [2021-11-25 17:48:27,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2307 transitions. [2021-11-25 17:48:27,030 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2307 transitions. Word has length 36 [2021-11-25 17:48:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:27,031 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2307 transitions. [2021-11-25 17:48:27,031 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) [2021-11-25 17:48:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2307 transitions. [2021-11-25 17:48:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:27,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:27,034 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] [2021-11-25 17:48:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 17:48:27,034 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash 477449972, now seen corresponding path program 8 times [2021-11-25 17:48:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009418839] [2021-11-25 17:48:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:27,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:27,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:27,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009418839] [2021-11-25 17:48:27,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009418839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:27,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:27,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:27,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294651145] [2021-11-25 17:48:27,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:27,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:27,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:27,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:27,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:27,714 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) [2021-11-25 17:48:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:28,611 INFO L93 Difference]: Finished difference Result 1874 states and 5237 transitions. [2021-11-25 17:48:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:28,612 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 [2021-11-25 17:48:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:28,618 INFO L225 Difference]: With dead ends: 1874 [2021-11-25 17:48:28,618 INFO L226 Difference]: Without dead ends: 1867 [2021-11-25 17:48:28,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:48:28,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 198 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:28,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 0 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:48:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-25 17:48:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 825. [2021-11-25 17:48:28,651 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) [2021-11-25 17:48:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2360 transitions. [2021-11-25 17:48:28,654 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2360 transitions. Word has length 36 [2021-11-25 17:48:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:28,654 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 2360 transitions. [2021-11-25 17:48:28,654 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) [2021-11-25 17:48:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2360 transitions. [2021-11-25 17:48:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:28,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:28,658 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] [2021-11-25 17:48:28,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 17:48:28,658 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -253317686, now seen corresponding path program 9 times [2021-11-25 17:48:28,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:28,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491258310] [2021-11-25 17:48:28,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:28,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:29,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:29,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491258310] [2021-11-25 17:48:29,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491258310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:29,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:29,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:29,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478871947] [2021-11-25 17:48:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:29,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:29,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:29,247 INFO L87 Difference]: Start difference. First operand 825 states and 2360 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) [2021-11-25 17:48:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:31,737 INFO L93 Difference]: Finished difference Result 2314 states and 6421 transitions. [2021-11-25 17:48:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 17:48:31,737 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 [2021-11-25 17:48:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:31,743 INFO L225 Difference]: With dead ends: 2314 [2021-11-25 17:48:31,744 INFO L226 Difference]: Without dead ends: 2307 [2021-11-25 17:48:31,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 17:48:31,745 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 409 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:31,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 0 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:48:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2021-11-25 17:48:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 833. [2021-11-25 17:48:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 2.8725961538461537) internal successors, (2390), 832 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 2390 transitions. [2021-11-25 17:48:31,787 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 2390 transitions. Word has length 36 [2021-11-25 17:48:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:31,788 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 2390 transitions. [2021-11-25 17:48:31,788 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) [2021-11-25 17:48:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2390 transitions. [2021-11-25 17:48:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:31,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:31,791 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] [2021-11-25 17:48:31,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 17:48:31,791 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1182360444, now seen corresponding path program 10 times [2021-11-25 17:48:31,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:31,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404484428] [2021-11-25 17:48:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:31,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:32,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:32,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404484428] [2021-11-25 17:48:32,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404484428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:32,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:32,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:32,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341366444] [2021-11-25 17:48:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:32,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:32,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:32,353 INFO L87 Difference]: Start difference. First operand 833 states and 2390 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) [2021-11-25 17:48:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:34,792 INFO L93 Difference]: Finished difference Result 2312 states and 6429 transitions. [2021-11-25 17:48:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 17:48:34,793 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 [2021-11-25 17:48:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:34,801 INFO L225 Difference]: With dead ends: 2312 [2021-11-25 17:48:34,801 INFO L226 Difference]: Without dead ends: 2305 [2021-11-25 17:48:34,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=404, Invalid=1078, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 17:48:34,803 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 300 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:34,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 0 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:48:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-11-25 17:48:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 831. [2021-11-25 17:48:34,843 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) [2021-11-25 17:48:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2381 transitions. [2021-11-25 17:48:34,846 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2381 transitions. Word has length 36 [2021-11-25 17:48:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:34,846 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2381 transitions. [2021-11-25 17:48:34,846 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) [2021-11-25 17:48:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2381 transitions. [2021-11-25 17:48:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:34,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:34,849 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] [2021-11-25 17:48:34,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 17:48:34,849 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2123064048, now seen corresponding path program 11 times [2021-11-25 17:48:34,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:34,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512131860] [2021-11-25 17:48:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:34,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:35,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:35,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512131860] [2021-11-25 17:48:35,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512131860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:35,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:35,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:35,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241325197] [2021-11-25 17:48:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:35,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:35,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:35,395 INFO L87 Difference]: Start difference. First operand 831 states and 2381 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) [2021-11-25 17:48:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:38,611 INFO L93 Difference]: Finished difference Result 2129 states and 5884 transitions. [2021-11-25 17:48:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 17:48:38,612 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 [2021-11-25 17:48:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:38,621 INFO L225 Difference]: With dead ends: 2129 [2021-11-25 17:48:38,621 INFO L226 Difference]: Without dead ends: 2122 [2021-11-25 17:48:38,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 17:48:38,624 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 333 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:38,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 0 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:48:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-25 17:48:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 825. [2021-11-25 17:48:38,660 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) [2021-11-25 17:48:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2360 transitions. [2021-11-25 17:48:38,663 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2360 transitions. Word has length 36 [2021-11-25 17:48:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:38,663 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 2360 transitions. [2021-11-25 17:48:38,664 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) [2021-11-25 17:48:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2360 transitions. [2021-11-25 17:48:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:38,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:38,666 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] [2021-11-25 17:48:38,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 17:48:38,667 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:38,667 INFO L85 PathProgramCache]: Analyzing trace with hash -889976186, now seen corresponding path program 12 times [2021-11-25 17:48:38,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:38,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579206323] [2021-11-25 17:48:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:38,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:39,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579206323] [2021-11-25 17:48:39,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579206323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:39,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:39,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:39,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373208312] [2021-11-25 17:48:39,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:39,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:39,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:39,219 INFO L87 Difference]: Start difference. First operand 825 states and 2360 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) [2021-11-25 17:48:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:41,403 INFO L93 Difference]: Finished difference Result 2175 states and 6010 transitions. [2021-11-25 17:48:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 17:48:41,404 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 [2021-11-25 17:48:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:41,411 INFO L225 Difference]: With dead ends: 2175 [2021-11-25 17:48:41,412 INFO L226 Difference]: Without dead ends: 2168 [2021-11-25 17:48:41,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 17:48:41,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 238 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:41,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 0 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:48:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-11-25 17:48:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 837. [2021-11-25 17:48:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.8636363636363638) internal successors, (2394), 836 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2394 transitions. [2021-11-25 17:48:41,451 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2394 transitions. Word has length 36 [2021-11-25 17:48:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:41,451 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2394 transitions. [2021-11-25 17:48:41,451 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) [2021-11-25 17:48:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2394 transitions. [2021-11-25 17:48:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:41,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:41,454 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] [2021-11-25 17:48:41,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 17:48:41,455 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 455187398, now seen corresponding path program 13 times [2021-11-25 17:48:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:41,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826296811] [2021-11-25 17:48:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:41,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:42,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:42,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826296811] [2021-11-25 17:48:42,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826296811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:42,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:42,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:48:42,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178354954] [2021-11-25 17:48:42,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:42,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:48:42,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:48:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:48:42,145 INFO L87 Difference]: Start difference. First operand 837 states and 2394 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) [2021-11-25 17:48:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:42,892 INFO L93 Difference]: Finished difference Result 1974 states and 5473 transitions. [2021-11-25 17:48:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:48:42,893 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 [2021-11-25 17:48:42,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:42,900 INFO L225 Difference]: With dead ends: 1974 [2021-11-25 17:48:42,900 INFO L226 Difference]: Without dead ends: 1967 [2021-11-25 17:48:42,901 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 [2021-11-25 17:48:42,901 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:42,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:48:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-11-25 17:48:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 843. [2021-11-25 17:48:42,931 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) [2021-11-25 17:48:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2417 transitions. [2021-11-25 17:48:42,935 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2417 transitions. Word has length 36 [2021-11-25 17:48:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:42,935 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2417 transitions. [2021-11-25 17:48:42,935 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) [2021-11-25 17:48:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2417 transitions. [2021-11-25 17:48:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:42,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:42,938 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] [2021-11-25 17:48:42,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 17:48:42,938 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash -473855360, now seen corresponding path program 14 times [2021-11-25 17:48:42,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:42,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285749654] [2021-11-25 17:48:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:42,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 17:48:43,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285749654] [2021-11-25 17:48:43,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285749654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:48:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456583920] [2021-11-25 17:48:43,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:48:43,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:48:43,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:48:43,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:48:43,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:48:43,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 17:48:43,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:48:43,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 17:48:43,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:48:44,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:48:44,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 17:48:50,399 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 17:48:50,399 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 273 treesize of output 297 [2021-11-25 17:48:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:52,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:48:52,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456583920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:52,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:48:52,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 23 [2021-11-25 17:48:52,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177716105] [2021-11-25 17:48:52,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:52,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-11-25 17:48:52,521 INFO L87 Difference]: Start difference. First operand 843 states and 2417 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) [2021-11-25 17:48:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:57,297 INFO L93 Difference]: Finished difference Result 976 states and 2789 transitions. [2021-11-25 17:48:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:48:57,301 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 [2021-11-25 17:48:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:57,304 INFO L225 Difference]: With dead ends: 976 [2021-11-25 17:48:57,304 INFO L226 Difference]: Without dead ends: 969 [2021-11-25 17:48:57,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=177, Invalid=944, Unknown=1, NotChecked=0, Total=1122 [2021-11-25 17:48:57,306 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:57,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 400 Invalid, 0 Unknown, 371 Unchecked, 0.3s Time] [2021-11-25 17:48:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-25 17:48:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 855. [2021-11-25 17:48:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 2.8747072599531616) internal successors, (2455), 854 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2455 transitions. [2021-11-25 17:48:57,328 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2455 transitions. Word has length 36 [2021-11-25 17:48:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:57,329 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 2455 transitions. [2021-11-25 17:48:57,329 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) [2021-11-25 17:48:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2455 transitions. [2021-11-25 17:48:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:57,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:57,331 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] [2021-11-25 17:48:57,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:48:57,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:48:57,545 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1682818504, now seen corresponding path program 15 times [2021-11-25 17:48:57,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:57,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625274543] [2021-11-25 17:48:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:57,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:58,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:58,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625274543] [2021-11-25 17:48:58,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625274543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:58,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:58,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:48:58,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637335263] [2021-11-25 17:48:58,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:58,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:48:58,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:48:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:48:58,169 INFO L87 Difference]: Start difference. First operand 855 states and 2455 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) [2021-11-25 17:48:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:59,069 INFO L93 Difference]: Finished difference Result 1978 states and 5502 transitions. [2021-11-25 17:48:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:48:59,070 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 [2021-11-25 17:48:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:59,074 INFO L225 Difference]: With dead ends: 1978 [2021-11-25 17:48:59,074 INFO L226 Difference]: Without dead ends: 1971 [2021-11-25 17:48:59,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:48:59,075 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 245 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:59,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 0 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:48:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2021-11-25 17:48:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 819. [2021-11-25 17:48:59,103 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) [2021-11-25 17:48:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2343 transitions. [2021-11-25 17:48:59,105 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2343 transitions. Word has length 36 [2021-11-25 17:48:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:59,106 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2343 transitions. [2021-11-25 17:48:59,106 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) [2021-11-25 17:48:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2343 transitions. [2021-11-25 17:48:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:48:59,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:59,109 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] [2021-11-25 17:48:59,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 17:48:59,109 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:48:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash -534093178, now seen corresponding path program 16 times [2021-11-25 17:48:59,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591753832] [2021-11-25 17:48:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:59,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:48:59,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591753832] [2021-11-25 17:48:59,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591753832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:59,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:59,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:48:59,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292392443] [2021-11-25 17:48:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:59,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:48:59,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:48:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:48:59,705 INFO L87 Difference]: Start difference. First operand 819 states and 2343 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) [2021-11-25 17:49:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:02,221 INFO L93 Difference]: Finished difference Result 1855 states and 5164 transitions. [2021-11-25 17:49:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:49:02,221 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 [2021-11-25 17:49:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:02,224 INFO L225 Difference]: With dead ends: 1855 [2021-11-25 17:49:02,224 INFO L226 Difference]: Without dead ends: 1848 [2021-11-25 17:49:02,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:49:02,225 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 290 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:02,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 0 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:49:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-11-25 17:49:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 822. [2021-11-25 17:49:02,251 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) [2021-11-25 17:49:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2350 transitions. [2021-11-25 17:49:02,253 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2350 transitions. Word has length 36 [2021-11-25 17:49:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:02,254 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 2350 transitions. [2021-11-25 17:49:02,254 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) [2021-11-25 17:49:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2350 transitions. [2021-11-25 17:49:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:02,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:02,257 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] [2021-11-25 17:49:02,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 17:49:02,257 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1326661840, now seen corresponding path program 17 times [2021-11-25 17:49:02,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:02,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986434473] [2021-11-25 17:49:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:02,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:02,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986434473] [2021-11-25 17:49:02,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986434473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:02,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:02,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 17:49:02,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876957027] [2021-11-25 17:49:02,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:02,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 17:49:02,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 17:49:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:49:02,921 INFO L87 Difference]: Start difference. First operand 822 states and 2350 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) [2021-11-25 17:49:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:04,346 INFO L93 Difference]: Finished difference Result 1817 states and 5082 transitions. [2021-11-25 17:49:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:49:04,346 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 [2021-11-25 17:49:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:04,349 INFO L225 Difference]: With dead ends: 1817 [2021-11-25 17:49:04,349 INFO L226 Difference]: Without dead ends: 1803 [2021-11-25 17:49:04,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-25 17:49:04,350 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 220 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:04,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 0 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:49:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-25 17:49:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 831. [2021-11-25 17:49:04,382 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) [2021-11-25 17:49:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2371 transitions. [2021-11-25 17:49:04,385 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2371 transitions. Word has length 36 [2021-11-25 17:49:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:04,385 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2371 transitions. [2021-11-25 17:49:04,385 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) [2021-11-25 17:49:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2371 transitions. [2021-11-25 17:49:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:04,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:04,388 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] [2021-11-25 17:49:04,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 17:49:04,388 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2085041196, now seen corresponding path program 18 times [2021-11-25 17:49:04,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:04,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929445862] [2021-11-25 17:49:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:04,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:05,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:05,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929445862] [2021-11-25 17:49:05,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929445862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:05,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:05,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:05,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786507054] [2021-11-25 17:49:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:05,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:05,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:05,179 INFO L87 Difference]: Start difference. First operand 831 states and 2371 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) [2021-11-25 17:49:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:07,244 INFO L93 Difference]: Finished difference Result 1886 states and 5219 transitions. [2021-11-25 17:49:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:49:07,244 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 [2021-11-25 17:49:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:07,247 INFO L225 Difference]: With dead ends: 1886 [2021-11-25 17:49:07,247 INFO L226 Difference]: Without dead ends: 1879 [2021-11-25 17:49:07,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:49:07,248 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:07,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:49:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-11-25 17:49:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 828. [2021-11-25 17:49:07,272 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) [2021-11-25 17:49:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2364 transitions. [2021-11-25 17:49:07,274 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2364 transitions. Word has length 36 [2021-11-25 17:49:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:07,275 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2364 transitions. [2021-11-25 17:49:07,275 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) [2021-11-25 17:49:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2364 transitions. [2021-11-25 17:49:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:07,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:07,277 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] [2021-11-25 17:49:07,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 17:49:07,278 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:07,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1168564438, now seen corresponding path program 19 times [2021-11-25 17:49:07,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:07,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793303485] [2021-11-25 17:49:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:07,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:07,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793303485] [2021-11-25 17:49:07,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793303485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:07,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:07,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:07,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025976700] [2021-11-25 17:49:07,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:07,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:07,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:07,831 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) [2021-11-25 17:49:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:08,844 INFO L93 Difference]: Finished difference Result 1821 states and 5086 transitions. [2021-11-25 17:49:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:08,845 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 [2021-11-25 17:49:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:08,848 INFO L225 Difference]: With dead ends: 1821 [2021-11-25 17:49:08,848 INFO L226 Difference]: Without dead ends: 1814 [2021-11-25 17:49:08,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:49:08,849 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:08,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:49:08,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-11-25 17:49:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 828. [2021-11-25 17:49:08,876 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) [2021-11-25 17:49:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2364 transitions. [2021-11-25 17:49:08,878 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2364 transitions. Word has length 36 [2021-11-25 17:49:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:08,879 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2364 transitions. [2021-11-25 17:49:08,879 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) [2021-11-25 17:49:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2364 transitions. [2021-11-25 17:49:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:08,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:08,881 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] [2021-11-25 17:49:08,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 17:49:08,882 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 147700922, now seen corresponding path program 20 times [2021-11-25 17:49:08,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:08,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227003653] [2021-11-25 17:49:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:08,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:09,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:09,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227003653] [2021-11-25 17:49:09,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227003653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:09,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:09,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:49:09,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395552065] [2021-11-25 17:49:09,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:09,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:49:09,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:09,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:49:09,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:49:09,562 INFO L87 Difference]: Start difference. First operand 828 states and 2364 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) [2021-11-25 17:49:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:10,850 INFO L93 Difference]: Finished difference Result 2018 states and 5619 transitions. [2021-11-25 17:49:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:49:10,851 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 [2021-11-25 17:49:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:10,854 INFO L225 Difference]: With dead ends: 2018 [2021-11-25 17:49:10,854 INFO L226 Difference]: Without dead ends: 2004 [2021-11-25 17:49:10,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:49:10,855 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:10,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:49:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-11-25 17:49:10,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 840. [2021-11-25 17:49:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 2.8760429082240764) internal successors, (2413), 839 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) [2021-11-25 17:49:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2413 transitions. [2021-11-25 17:49:10,880 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2413 transitions. Word has length 36 [2021-11-25 17:49:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:10,881 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 2413 transitions. [2021-11-25 17:49:10,881 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) [2021-11-25 17:49:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2413 transitions. [2021-11-25 17:49:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:10,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:10,884 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] [2021-11-25 17:49:10,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 17:49:10,884 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash 906080278, now seen corresponding path program 21 times [2021-11-25 17:49:10,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:10,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27014822] [2021-11-25 17:49:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:10,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:11,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:11,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27014822] [2021-11-25 17:49:11,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27014822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:11,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:11,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:11,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952813773] [2021-11-25 17:49:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:11,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:11,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:11,388 INFO L87 Difference]: Start difference. First operand 840 states and 2413 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) [2021-11-25 17:49:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:12,107 INFO L93 Difference]: Finished difference Result 2091 states and 5883 transitions. [2021-11-25 17:49:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:12,107 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 [2021-11-25 17:49:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:12,110 INFO L225 Difference]: With dead ends: 2091 [2021-11-25 17:49:12,110 INFO L226 Difference]: Without dead ends: 2084 [2021-11-25 17:49:12,111 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 [2021-11-25 17:49:12,111 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:12,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:49:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-11-25 17:49:12,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 873. [2021-11-25 17:49:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.9174311926605503) internal successors, (2544), 872 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2544 transitions. [2021-11-25 17:49:12,141 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2544 transitions. Word has length 36 [2021-11-25 17:49:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:12,141 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 2544 transitions. [2021-11-25 17:49:12,141 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) [2021-11-25 17:49:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2544 transitions. [2021-11-25 17:49:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:12,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:12,144 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] [2021-11-25 17:49:12,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-25 17:49:12,144 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:12,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1412146496, now seen corresponding path program 22 times [2021-11-25 17:49:12,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:12,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325081318] [2021-11-25 17:49:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:12,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:12,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:12,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325081318] [2021-11-25 17:49:12,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325081318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:12,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:12,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:12,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274383059] [2021-11-25 17:49:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:12,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:12,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:12,616 INFO L87 Difference]: Start difference. First operand 873 states and 2544 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) [2021-11-25 17:49:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:13,778 INFO L93 Difference]: Finished difference Result 2024 states and 5704 transitions. [2021-11-25 17:49:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:49:13,779 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 [2021-11-25 17:49:13,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:13,782 INFO L225 Difference]: With dead ends: 2024 [2021-11-25 17:49:13,782 INFO L226 Difference]: Without dead ends: 2010 [2021-11-25 17:49:13,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:49:13,783 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:13,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:49:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2021-11-25 17:49:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 878. [2021-11-25 17:49:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 2.9156214367160773) internal successors, (2557), 877 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) [2021-11-25 17:49:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2557 transitions. [2021-11-25 17:49:13,803 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2557 transitions. Word has length 36 [2021-11-25 17:49:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:13,804 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 2557 transitions. [2021-11-25 17:49:13,804 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) [2021-11-25 17:49:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2557 transitions. [2021-11-25 17:49:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:13,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:13,806 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] [2021-11-25 17:49:13,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-25 17:49:13,806 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1291410886, now seen corresponding path program 23 times [2021-11-25 17:49:13,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:13,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661889518] [2021-11-25 17:49:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:13,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:14,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:14,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661889518] [2021-11-25 17:49:14,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661889518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:14,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:14,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:14,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107004925] [2021-11-25 17:49:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:14,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:14,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:14,319 INFO L87 Difference]: Start difference. First operand 878 states and 2557 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) [2021-11-25 17:49:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:16,416 INFO L93 Difference]: Finished difference Result 2164 states and 6049 transitions. [2021-11-25 17:49:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:49:16,417 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 [2021-11-25 17:49:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:16,420 INFO L225 Difference]: With dead ends: 2164 [2021-11-25 17:49:16,420 INFO L226 Difference]: Without dead ends: 2157 [2021-11-25 17:49:16,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:49:16,422 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 248 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:16,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 0 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:49:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2021-11-25 17:49:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 873. [2021-11-25 17:49:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.9174311926605503) internal successors, (2544), 872 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2544 transitions. [2021-11-25 17:49:16,457 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2544 transitions. Word has length 36 [2021-11-25 17:49:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:16,457 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 2544 transitions. [2021-11-25 17:49:16,457 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) [2021-11-25 17:49:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2544 transitions. [2021-11-25 17:49:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:16,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:16,460 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] [2021-11-25 17:49:16,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-25 17:49:16,460 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:16,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1599071046, now seen corresponding path program 24 times [2021-11-25 17:49:16,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506852154] [2021-11-25 17:49:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:16,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:17,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:17,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506852154] [2021-11-25 17:49:17,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506852154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:17,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:17,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:17,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517222185] [2021-11-25 17:49:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:17,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:17,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:17,039 INFO L87 Difference]: Start difference. First operand 873 states and 2544 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) [2021-11-25 17:49:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:18,921 INFO L93 Difference]: Finished difference Result 2329 states and 6542 transitions. [2021-11-25 17:49:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 17:49:18,921 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 [2021-11-25 17:49:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:18,925 INFO L225 Difference]: With dead ends: 2329 [2021-11-25 17:49:18,925 INFO L226 Difference]: Without dead ends: 2322 [2021-11-25 17:49:18,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 17:49:18,926 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:18,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:49:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-11-25 17:49:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 875. [2021-11-25 17:49:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.9210526315789473) internal successors, (2553), 874 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2553 transitions. [2021-11-25 17:49:18,953 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2553 transitions. Word has length 36 [2021-11-25 17:49:18,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:18,953 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2553 transitions. [2021-11-25 17:49:18,953 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) [2021-11-25 17:49:18,953 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2553 transitions. [2021-11-25 17:49:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:18,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:18,956 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] [2021-11-25 17:49:18,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-25 17:49:18,956 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash 670028288, now seen corresponding path program 25 times [2021-11-25 17:49:18,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:18,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113799450] [2021-11-25 17:49:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:18,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:19,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:19,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113799450] [2021-11-25 17:49:19,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113799450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:19,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:19,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:19,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055580838] [2021-11-25 17:49:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:19,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:19,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:19,562 INFO L87 Difference]: Start difference. First operand 875 states and 2553 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) [2021-11-25 17:49:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:20,482 INFO L93 Difference]: Finished difference Result 2165 states and 6065 transitions. [2021-11-25 17:49:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:20,482 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 [2021-11-25 17:49:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:20,487 INFO L225 Difference]: With dead ends: 2165 [2021-11-25 17:49:20,487 INFO L226 Difference]: Without dead ends: 2158 [2021-11-25 17:49:20,487 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 [2021-11-25 17:49:20,489 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:20,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:49:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-11-25 17:49:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 891. [2021-11-25 17:49:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.9224719101123595) internal successors, (2601), 890 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2601 transitions. [2021-11-25 17:49:20,522 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2601 transitions. Word has length 36 [2021-11-25 17:49:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:20,522 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2601 transitions. [2021-11-25 17:49:20,523 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) [2021-11-25 17:49:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2601 transitions. [2021-11-25 17:49:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:20,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:20,525 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] [2021-11-25 17:49:20,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-25 17:49:20,526 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash 801090644, now seen corresponding path program 26 times [2021-11-25 17:49:20,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:20,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976436417] [2021-11-25 17:49:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:20,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 17:49:21,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:21,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976436417] [2021-11-25 17:49:21,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976436417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:21,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536225940] [2021-11-25 17:49:21,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:49:21,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:21,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:21,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:21,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 17:49:21,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 17:49:21,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:49:21,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 17:49:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:49:21,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:21,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 17:49:23,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 17:49:23,863 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 [2021-11-25 17:49:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:25,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:49:25,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536225940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:25,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:49:25,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 25 [2021-11-25 17:49:25,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768817779] [2021-11-25 17:49:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:25,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:25,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:49:25,419 INFO L87 Difference]: Start difference. First operand 891 states and 2601 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) [2021-11-25 17:49:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:25,908 INFO L93 Difference]: Finished difference Result 1636 states and 4716 transitions. [2021-11-25 17:49:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:49:25,909 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 [2021-11-25 17:49:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:25,911 INFO L225 Difference]: With dead ends: 1636 [2021-11-25 17:49:25,912 INFO L226 Difference]: Without dead ends: 1629 [2021-11-25 17:49:25,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:49:25,913 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:25,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 269 Invalid, 0 Unknown, 422 Unchecked, 0.2s Time] [2021-11-25 17:49:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-11-25 17:49:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 919. [2021-11-25 17:49:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 2.934640522875817) internal successors, (2694), 918 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 2694 transitions. [2021-11-25 17:49:25,932 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 2694 transitions. Word has length 36 [2021-11-25 17:49:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:25,933 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 2694 transitions. [2021-11-25 17:49:25,933 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) [2021-11-25 17:49:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 2694 transitions. [2021-11-25 17:49:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:25,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:25,934 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] [2021-11-25 17:49:25,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:49:26,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-25 17:49:26,135 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -187666558, now seen corresponding path program 27 times [2021-11-25 17:49:26,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:26,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123530554] [2021-11-25 17:49:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:26,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:26,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:26,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123530554] [2021-11-25 17:49:26,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123530554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:26,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:26,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:26,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595848783] [2021-11-25 17:49:26,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:26,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:26,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:26,730 INFO L87 Difference]: Start difference. First operand 919 states and 2694 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) [2021-11-25 17:49:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:28,021 INFO L93 Difference]: Finished difference Result 2129 states and 6012 transitions. [2021-11-25 17:49:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:49:28,021 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 [2021-11-25 17:49:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:28,024 INFO L225 Difference]: With dead ends: 2129 [2021-11-25 17:49:28,025 INFO L226 Difference]: Without dead ends: 2111 [2021-11-25 17:49:28,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-11-25 17:49:28,026 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 232 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:28,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 0 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:49:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2021-11-25 17:49:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 891. [2021-11-25 17:49:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.9224719101123595) internal successors, (2601), 890 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2601 transitions. [2021-11-25 17:49:28,055 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2601 transitions. Word has length 36 [2021-11-25 17:49:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:28,055 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2601 transitions. [2021-11-25 17:49:28,056 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) [2021-11-25 17:49:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2601 transitions. [2021-11-25 17:49:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:28,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:28,058 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] [2021-11-25 17:49:28,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 17:49:28,058 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2034629200, now seen corresponding path program 28 times [2021-11-25 17:49:28,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:28,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384182171] [2021-11-25 17:49:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:28,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:28,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384182171] [2021-11-25 17:49:28,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384182171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:28,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:28,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:28,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952687595] [2021-11-25 17:49:28,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:28,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:28,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:28,602 INFO L87 Difference]: Start difference. First operand 891 states and 2601 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) [2021-11-25 17:49:31,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:31,289 INFO L93 Difference]: Finished difference Result 2508 states and 7103 transitions. [2021-11-25 17:49:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 17:49:31,290 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 [2021-11-25 17:49:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:31,294 INFO L225 Difference]: With dead ends: 2508 [2021-11-25 17:49:31,294 INFO L226 Difference]: Without dead ends: 2501 [2021-11-25 17:49:31,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=439, Invalid=1201, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 17:49:31,294 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 313 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:31,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 0 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:49:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2021-11-25 17:49:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 895. [2021-11-25 17:49:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 2.9250559284116333) internal successors, (2615), 894 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) [2021-11-25 17:49:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2615 transitions. [2021-11-25 17:49:31,322 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2615 transitions. Word has length 36 [2021-11-25 17:49:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:31,322 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 2615 transitions. [2021-11-25 17:49:31,322 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) [2021-11-25 17:49:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2615 transitions. [2021-11-25 17:49:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:31,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:31,325 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] [2021-11-25 17:49:31,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-25 17:49:31,325 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:31,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash 341752534, now seen corresponding path program 29 times [2021-11-25 17:49:31,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:31,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763729021] [2021-11-25 17:49:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:31,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:31,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763729021] [2021-11-25 17:49:31,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763729021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:31,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:31,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:49:31,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575282955] [2021-11-25 17:49:31,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:31,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:49:31,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:49:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:31,875 INFO L87 Difference]: Start difference. First operand 895 states and 2615 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) [2021-11-25 17:49:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:34,754 INFO L93 Difference]: Finished difference Result 2342 states and 6573 transitions. [2021-11-25 17:49:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 17:49:34,754 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 [2021-11-25 17:49:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:34,758 INFO L225 Difference]: With dead ends: 2342 [2021-11-25 17:49:34,758 INFO L226 Difference]: Without dead ends: 2335 [2021-11-25 17:49:34,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 17:49:34,759 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:34,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:49:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-25 17:49:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 891. [2021-11-25 17:49:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.9224719101123595) internal successors, (2601), 890 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2601 transitions. [2021-11-25 17:49:34,794 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2601 transitions. Word has length 36 [2021-11-25 17:49:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:34,794 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2601 transitions. [2021-11-25 17:49:34,794 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) [2021-11-25 17:49:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2601 transitions. [2021-11-25 17:49:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:34,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:34,797 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] [2021-11-25 17:49:34,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-25 17:49:34,797 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 589200976, now seen corresponding path program 30 times [2021-11-25 17:49:34,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:34,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158479983] [2021-11-25 17:49:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:34,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:35,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158479983] [2021-11-25 17:49:35,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158479983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:35,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:35,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:35,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397235590] [2021-11-25 17:49:35,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:35,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:35,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:35,198 INFO L87 Difference]: Start difference. First operand 891 states and 2601 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) [2021-11-25 17:49:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:35,975 INFO L93 Difference]: Finished difference Result 2146 states and 6037 transitions. [2021-11-25 17:49:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:35,976 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 [2021-11-25 17:49:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:35,979 INFO L225 Difference]: With dead ends: 2146 [2021-11-25 17:49:35,979 INFO L226 Difference]: Without dead ends: 2139 [2021-11-25 17:49:35,979 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 [2021-11-25 17:49:35,980 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 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 [2021-11-25 17:49:35,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:49:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2021-11-25 17:49:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 906. [2021-11-25 17:49:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 2.9226519337016574) internal successors, (2645), 905 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 2645 transitions. [2021-11-25 17:49:36,002 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 2645 transitions. Word has length 36 [2021-11-25 17:49:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:36,002 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 2645 transitions. [2021-11-25 17:49:36,003 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) [2021-11-25 17:49:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 2645 transitions. [2021-11-25 17:49:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:36,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:36,005 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] [2021-11-25 17:49:36,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-25 17:49:36,006 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1886123902, now seen corresponding path program 31 times [2021-11-25 17:49:36,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:36,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643973820] [2021-11-25 17:49:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:36,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:36,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:36,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643973820] [2021-11-25 17:49:36,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643973820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:36,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:36,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:36,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013823560] [2021-11-25 17:49:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:36,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:36,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:36,435 INFO L87 Difference]: Start difference. First operand 906 states and 2645 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) [2021-11-25 17:49:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:37,188 INFO L93 Difference]: Finished difference Result 2134 states and 6011 transitions. [2021-11-25 17:49:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:37,189 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 [2021-11-25 17:49:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:37,192 INFO L225 Difference]: With dead ends: 2134 [2021-11-25 17:49:37,192 INFO L226 Difference]: Without dead ends: 2120 [2021-11-25 17:49:37,193 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 [2021-11-25 17:49:37,193 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 208 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:37,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 0 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:49:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-11-25 17:49:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 901. [2021-11-25 17:49:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 2.918888888888889) internal successors, (2627), 900 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2627 transitions. [2021-11-25 17:49:37,228 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2627 transitions. Word has length 36 [2021-11-25 17:49:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:37,228 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 2627 transitions. [2021-11-25 17:49:37,228 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) [2021-11-25 17:49:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2627 transitions. [2021-11-25 17:49:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:37,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:37,230 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] [2021-11-25 17:49:37,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-25 17:49:37,230 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash 592485356, now seen corresponding path program 32 times [2021-11-25 17:49:37,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:37,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578247210] [2021-11-25 17:49:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:37,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:37,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:37,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578247210] [2021-11-25 17:49:37,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578247210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:37,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:37,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:37,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084479052] [2021-11-25 17:49:37,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:37,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:37,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:37,672 INFO L87 Difference]: Start difference. First operand 901 states and 2627 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) [2021-11-25 17:49:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:38,320 INFO L93 Difference]: Finished difference Result 2185 states and 6110 transitions. [2021-11-25 17:49:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:38,321 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 [2021-11-25 17:49:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:38,324 INFO L225 Difference]: With dead ends: 2185 [2021-11-25 17:49:38,324 INFO L226 Difference]: Without dead ends: 2178 [2021-11-25 17:49:38,324 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 [2021-11-25 17:49:38,325 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 184 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:38,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 0 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:49:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2021-11-25 17:49:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 883. [2021-11-25 17:49:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.9138321995464853) internal successors, (2570), 882 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2570 transitions. [2021-11-25 17:49:38,344 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2570 transitions. Word has length 36 [2021-11-25 17:49:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:38,344 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 2570 transitions. [2021-11-25 17:49:38,345 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) [2021-11-25 17:49:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2570 transitions. [2021-11-25 17:49:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:38,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:38,346 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] [2021-11-25 17:49:38,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-25 17:49:38,346 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash 636522046, now seen corresponding path program 33 times [2021-11-25 17:49:38,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:38,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685917730] [2021-11-25 17:49:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:38,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:38,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:38,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685917730] [2021-11-25 17:49:38,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685917730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:38,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:38,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:49:38,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009932076] [2021-11-25 17:49:38,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:38,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:49:38,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:49:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:49:38,778 INFO L87 Difference]: Start difference. First operand 883 states and 2570 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) [2021-11-25 17:49:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:39,654 INFO L93 Difference]: Finished difference Result 2107 states and 5922 transitions. [2021-11-25 17:49:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:39,654 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 [2021-11-25 17:49:39,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:39,659 INFO L225 Difference]: With dead ends: 2107 [2021-11-25 17:49:39,659 INFO L226 Difference]: Without dead ends: 2093 [2021-11-25 17:49:39,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:49:39,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 162 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:39,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 0 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:49:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2021-11-25 17:49:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 865. [2021-11-25 17:49:39,685 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) [2021-11-25 17:49:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2504 transitions. [2021-11-25 17:49:39,687 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2504 transitions. Word has length 36 [2021-11-25 17:49:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:39,688 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2504 transitions. [2021-11-25 17:49:39,688 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) [2021-11-25 17:49:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2504 transitions. [2021-11-25 17:49:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:39,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:39,690 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] [2021-11-25 17:49:39,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-25 17:49:39,691 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash 510237004, now seen corresponding path program 7 times [2021-11-25 17:49:39,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:39,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093897123] [2021-11-25 17:49:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:40,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:40,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093897123] [2021-11-25 17:49:40,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093897123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:40,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:40,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:40,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692882496] [2021-11-25 17:49:40,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:40,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:40,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:40,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:40,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:40,384 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) [2021-11-25 17:49:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:41,020 INFO L93 Difference]: Finished difference Result 958 states and 2710 transitions. [2021-11-25 17:49:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:41,021 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 [2021-11-25 17:49:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:41,023 INFO L225 Difference]: With dead ends: 958 [2021-11-25 17:49:41,023 INFO L226 Difference]: Without dead ends: 941 [2021-11-25 17:49:41,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:49:41,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:41,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:49:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-11-25 17:49:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 895. [2021-11-25 17:49:41,041 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) [2021-11-25 17:49:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2596 transitions. [2021-11-25 17:49:41,043 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2596 transitions. Word has length 36 [2021-11-25 17:49:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:41,044 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 2596 transitions. [2021-11-25 17:49:41,044 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) [2021-11-25 17:49:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2596 transitions. [2021-11-25 17:49:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:41,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:41,046 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] [2021-11-25 17:49:41,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-25 17:49:41,047 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1479805884, now seen corresponding path program 8 times [2021-11-25 17:49:41,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:41,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874988473] [2021-11-25 17:49:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:41,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:41,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874988473] [2021-11-25 17:49:41,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874988473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:41,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:41,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:41,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268076974] [2021-11-25 17:49:41,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:41,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:41,483 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) [2021-11-25 17:49:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:41,962 INFO L93 Difference]: Finished difference Result 928 states and 2661 transitions. [2021-11-25 17:49:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:41,963 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 [2021-11-25 17:49:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:41,965 INFO L225 Difference]: With dead ends: 928 [2021-11-25 17:49:41,965 INFO L226 Difference]: Without dead ends: 917 [2021-11-25 17:49:41,965 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 [2021-11-25 17:49:41,966 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:41,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:49:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-25 17:49:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 897. [2021-11-25 17:49:41,983 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) [2021-11-25 17:49:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 2599 transitions. [2021-11-25 17:49:41,986 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 2599 transitions. Word has length 36 [2021-11-25 17:49:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:41,986 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 2599 transitions. [2021-11-25 17:49:41,986 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) [2021-11-25 17:49:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 2599 transitions. [2021-11-25 17:49:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:41,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:41,988 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] [2021-11-25 17:49:41,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-25 17:49:41,989 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1864711398, now seen corresponding path program 9 times [2021-11-25 17:49:41,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:41,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861956969] [2021-11-25 17:49:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:41,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:42,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:42,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861956969] [2021-11-25 17:49:42,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861956969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:42,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:42,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:42,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216592235] [2021-11-25 17:49:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:42,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:42,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:42,589 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) [2021-11-25 17:49:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:42,929 INFO L93 Difference]: Finished difference Result 926 states and 2655 transitions. [2021-11-25 17:49:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:42,930 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 [2021-11-25 17:49:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:42,931 INFO L225 Difference]: With dead ends: 926 [2021-11-25 17:49:42,931 INFO L226 Difference]: Without dead ends: 907 [2021-11-25 17:49:42,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:42,932 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:42,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:49:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-25 17:49:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 871. [2021-11-25 17:49:42,943 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) [2021-11-25 17:49:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2532 transitions. [2021-11-25 17:49:42,945 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2532 transitions. Word has length 36 [2021-11-25 17:49:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:42,945 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2532 transitions. [2021-11-25 17:49:42,945 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) [2021-11-25 17:49:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2532 transitions. [2021-11-25 17:49:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:42,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:42,947 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] [2021-11-25 17:49:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-25 17:49:42,947 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1684496906, now seen corresponding path program 10 times [2021-11-25 17:49:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:42,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327418459] [2021-11-25 17:49:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:42,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:43,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:43,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327418459] [2021-11-25 17:49:43,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327418459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:43,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714370126] [2021-11-25 17:49:43,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:43,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:43,499 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) [2021-11-25 17:49:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:44,176 INFO L93 Difference]: Finished difference Result 977 states and 2731 transitions. [2021-11-25 17:49:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:44,177 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 [2021-11-25 17:49:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:44,178 INFO L225 Difference]: With dead ends: 977 [2021-11-25 17:49:44,179 INFO L226 Difference]: Without dead ends: 960 [2021-11-25 17:49:44,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:49:44,179 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:44,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:49:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-25 17:49:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 892. [2021-11-25 17:49:44,190 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) [2021-11-25 17:49:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2584 transitions. [2021-11-25 17:49:44,192 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2584 transitions. Word has length 36 [2021-11-25 17:49:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:44,192 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2584 transitions. [2021-11-25 17:49:44,192 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) [2021-11-25 17:49:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2584 transitions. [2021-11-25 17:49:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:44,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:44,194 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] [2021-11-25 17:49:44,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-25 17:49:44,194 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1308357892, now seen corresponding path program 11 times [2021-11-25 17:49:44,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864808973] [2021-11-25 17:49:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:44,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:44,590 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:44,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864808973] [2021-11-25 17:49:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864808973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:44,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:44,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:44,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958840210] [2021-11-25 17:49:44,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:44,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:44,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:44,592 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) [2021-11-25 17:49:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:44,974 INFO L93 Difference]: Finished difference Result 963 states and 2702 transitions. [2021-11-25 17:49:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:44,974 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 [2021-11-25 17:49:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:44,976 INFO L225 Difference]: With dead ends: 963 [2021-11-25 17:49:44,976 INFO L226 Difference]: Without dead ends: 949 [2021-11-25 17:49:44,976 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 [2021-11-25 17:49:44,976 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 [2021-11-25 17:49:44,977 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] [2021-11-25 17:49:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-11-25 17:49:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 895. [2021-11-25 17:49:44,988 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) [2021-11-25 17:49:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2588 transitions. [2021-11-25 17:49:44,990 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2588 transitions. Word has length 36 [2021-11-25 17:49:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:44,990 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 2588 transitions. [2021-11-25 17:49:44,990 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) [2021-11-25 17:49:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2588 transitions. [2021-11-25 17:49:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:44,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:44,991 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] [2021-11-25 17:49:44,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-25 17:49:44,992 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:44,992 INFO L85 PathProgramCache]: Analyzing trace with hash 300821862, now seen corresponding path program 12 times [2021-11-25 17:49:44,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:44,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243481992] [2021-11-25 17:49:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:44,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:45,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:45,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243481992] [2021-11-25 17:49:45,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243481992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:45,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:45,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:45,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147920583] [2021-11-25 17:49:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:45,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:45,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:45,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:45,297 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) [2021-11-25 17:49:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:45,773 INFO L93 Difference]: Finished difference Result 947 states and 2679 transitions. [2021-11-25 17:49:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:45,773 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 [2021-11-25 17:49:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:45,775 INFO L225 Difference]: With dead ends: 947 [2021-11-25 17:49:45,775 INFO L226 Difference]: Without dead ends: 923 [2021-11-25 17:49:45,775 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 [2021-11-25 17:49:45,776 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:45,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:49:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-25 17:49:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 871. [2021-11-25 17:49:45,787 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) [2021-11-25 17:49:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2525 transitions. [2021-11-25 17:49:45,788 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2525 transitions. Word has length 36 [2021-11-25 17:49:45,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:45,788 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2525 transitions. [2021-11-25 17:49:45,788 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) [2021-11-25 17:49:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2525 transitions. [2021-11-25 17:49:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:45,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:45,790 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] [2021-11-25 17:49:45,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-25 17:49:45,791 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:45,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash -255213430, now seen corresponding path program 13 times [2021-11-25 17:49:45,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:45,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096995757] [2021-11-25 17:49:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:45,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:46,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:46,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096995757] [2021-11-25 17:49:46,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096995757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:46,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:46,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:46,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113955461] [2021-11-25 17:49:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:46,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:46,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:46,006 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) [2021-11-25 17:49:46,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:46,350 INFO L93 Difference]: Finished difference Result 930 states and 2655 transitions. [2021-11-25 17:49:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:49:46,351 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 [2021-11-25 17:49:46,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:46,353 INFO L225 Difference]: With dead ends: 930 [2021-11-25 17:49:46,353 INFO L226 Difference]: Without dead ends: 915 [2021-11-25 17:49:46,353 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 [2021-11-25 17:49:46,353 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 [2021-11-25 17:49:46,354 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] [2021-11-25 17:49:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-11-25 17:49:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 880. [2021-11-25 17:49:46,370 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) [2021-11-25 17:49:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2547 transitions. [2021-11-25 17:49:46,373 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2547 transitions. Word has length 36 [2021-11-25 17:49:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:46,373 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2547 transitions. [2021-11-25 17:49:46,373 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) [2021-11-25 17:49:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2547 transitions. [2021-11-25 17:49:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:46,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:46,376 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] [2021-11-25 17:49:46,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-25 17:49:46,376 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -253429492, now seen corresponding path program 14 times [2021-11-25 17:49:46,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:46,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684965939] [2021-11-25 17:49:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:46,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:46,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:46,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684965939] [2021-11-25 17:49:46,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684965939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:46,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:46,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:46,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732098054] [2021-11-25 17:49:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:46,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:46,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:46,654 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) [2021-11-25 17:49:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:46,981 INFO L93 Difference]: Finished difference Result 938 states and 2653 transitions. [2021-11-25 17:49:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:49:46,981 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 [2021-11-25 17:49:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:46,983 INFO L225 Difference]: With dead ends: 938 [2021-11-25 17:49:46,983 INFO L226 Difference]: Without dead ends: 914 [2021-11-25 17:49:46,983 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 [2021-11-25 17:49:46,984 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 [2021-11-25 17:49:46,984 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] [2021-11-25 17:49:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-25 17:49:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 875. [2021-11-25 17:49:47,006 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) [2021-11-25 17:49:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2535 transitions. [2021-11-25 17:49:47,007 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2535 transitions. Word has length 36 [2021-11-25 17:49:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:47,007 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2535 transitions. [2021-11-25 17:49:47,008 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) [2021-11-25 17:49:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2535 transitions. [2021-11-25 17:49:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:47,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:47,009 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] [2021-11-25 17:49:47,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-25 17:49:47,010 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1424059288, now seen corresponding path program 15 times [2021-11-25 17:49:47,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433988434] [2021-11-25 17:49:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:47,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:47,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433988434] [2021-11-25 17:49:47,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433988434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:47,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:47,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:47,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019196383] [2021-11-25 17:49:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:47,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:47,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:47,417 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) [2021-11-25 17:49:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:47,868 INFO L93 Difference]: Finished difference Result 911 states and 2607 transitions. [2021-11-25 17:49:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:49:47,869 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 [2021-11-25 17:49:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:47,871 INFO L225 Difference]: With dead ends: 911 [2021-11-25 17:49:47,871 INFO L226 Difference]: Without dead ends: 896 [2021-11-25 17:49:47,871 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 [2021-11-25 17:49:47,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:47,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:49:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-11-25 17:49:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 877. [2021-11-25 17:49:47,888 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) [2021-11-25 17:49:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2538 transitions. [2021-11-25 17:49:47,890 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2538 transitions. Word has length 36 [2021-11-25 17:49:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:47,890 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 2538 transitions. [2021-11-25 17:49:47,890 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) [2021-11-25 17:49:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2538 transitions. [2021-11-25 17:49:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:47,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:47,892 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] [2021-11-25 17:49:47,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-25 17:49:47,892 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1920457994, now seen corresponding path program 16 times [2021-11-25 17:49:47,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:47,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678204028] [2021-11-25 17:49:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:47,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:48,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:48,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678204028] [2021-11-25 17:49:48,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678204028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:48,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:48,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:48,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463537177] [2021-11-25 17:49:48,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:48,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:48,438 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) [2021-11-25 17:49:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:48,691 INFO L93 Difference]: Finished difference Result 905 states and 2592 transitions. [2021-11-25 17:49:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:49:48,692 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 [2021-11-25 17:49:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:48,694 INFO L225 Difference]: With dead ends: 905 [2021-11-25 17:49:48,694 INFO L226 Difference]: Without dead ends: 892 [2021-11-25 17:49:48,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:49:48,695 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 [2021-11-25 17:49:48,695 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] [2021-11-25 17:49:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-25 17:49:48,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 875. [2021-11-25 17:49:48,710 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) [2021-11-25 17:49:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2533 transitions. [2021-11-25 17:49:48,713 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2533 transitions. Word has length 36 [2021-11-25 17:49:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:48,713 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2533 transitions. [2021-11-25 17:49:48,713 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) [2021-11-25 17:49:48,714 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2533 transitions. [2021-11-25 17:49:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:48,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:48,716 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] [2021-11-25 17:49:48,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-25 17:49:48,716 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash 347391146, now seen corresponding path program 17 times [2021-11-25 17:49:48,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:48,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677905377] [2021-11-25 17:49:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:48,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:49,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677905377] [2021-11-25 17:49:49,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677905377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:49,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:49,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:49,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39094068] [2021-11-25 17:49:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:49,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:49,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:49,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:49,018 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) [2021-11-25 17:49:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:49,328 INFO L93 Difference]: Finished difference Result 921 states and 2611 transitions. [2021-11-25 17:49:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:49:49,328 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 [2021-11-25 17:49:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:49,330 INFO L225 Difference]: With dead ends: 921 [2021-11-25 17:49:49,330 INFO L226 Difference]: Without dead ends: 907 [2021-11-25 17:49:49,330 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 [2021-11-25 17:49:49,332 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:49,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:49:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-25 17:49:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 878. [2021-11-25 17:49:49,345 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) [2021-11-25 17:49:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2537 transitions. [2021-11-25 17:49:49,348 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2537 transitions. Word has length 36 [2021-11-25 17:49:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:49,348 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 2537 transitions. [2021-11-25 17:49:49,349 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) [2021-11-25 17:49:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2537 transitions. [2021-11-25 17:49:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:49,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:49,351 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] [2021-11-25 17:49:49,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-25 17:49:49,351 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -660144884, now seen corresponding path program 18 times [2021-11-25 17:49:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:49,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449479727] [2021-11-25 17:49:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:49,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:49,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:49,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449479727] [2021-11-25 17:49:49,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449479727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:49,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:49,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:49,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100525278] [2021-11-25 17:49:49,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:49,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:49,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:49,676 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) [2021-11-25 17:49:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:49,965 INFO L93 Difference]: Finished difference Result 905 states and 2588 transitions. [2021-11-25 17:49:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:49:49,966 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 [2021-11-25 17:49:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:49,967 INFO L225 Difference]: With dead ends: 905 [2021-11-25 17:49:49,968 INFO L226 Difference]: Without dead ends: 875 [2021-11-25 17:49:49,968 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 [2021-11-25 17:49:49,968 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 [2021-11-25 17:49:49,968 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] [2021-11-25 17:49:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-25 17:49:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 851. [2021-11-25 17:49:49,978 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) [2021-11-25 17:49:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2456 transitions. [2021-11-25 17:49:49,980 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2456 transitions. Word has length 36 [2021-11-25 17:49:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:49,980 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 2456 transitions. [2021-11-25 17:49:49,980 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) [2021-11-25 17:49:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2456 transitions. [2021-11-25 17:49:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:49,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:49,982 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] [2021-11-25 17:49:49,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-25 17:49:49,982 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1273544530, now seen corresponding path program 19 times [2021-11-25 17:49:49,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:49,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952560461] [2021-11-25 17:49:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:49,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:50,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:50,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952560461] [2021-11-25 17:49:50,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952560461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:50,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:50,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:50,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761277285] [2021-11-25 17:49:50,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:50,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:50,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:50,382 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) [2021-11-25 17:49:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:50,691 INFO L93 Difference]: Finished difference Result 931 states and 2673 transitions. [2021-11-25 17:49:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:49:50,692 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 [2021-11-25 17:49:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:50,693 INFO L225 Difference]: With dead ends: 931 [2021-11-25 17:49:50,693 INFO L226 Difference]: Without dead ends: 920 [2021-11-25 17:49:50,693 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 [2021-11-25 17:49:50,694 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 [2021-11-25 17:49:50,694 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] [2021-11-25 17:49:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-25 17:49:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 885. [2021-11-25 17:49:50,705 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) [2021-11-25 17:49:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 2566 transitions. [2021-11-25 17:49:50,707 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 2566 transitions. Word has length 36 [2021-11-25 17:49:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:50,707 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 2566 transitions. [2021-11-25 17:49:50,707 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) [2021-11-25 17:49:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 2566 transitions. [2021-11-25 17:49:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:50,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:50,708 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] [2021-11-25 17:49:50,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-25 17:49:50,709 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:50,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1275328468, now seen corresponding path program 20 times [2021-11-25 17:49:50,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:50,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748000917] [2021-11-25 17:49:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:50,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:50,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:50,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748000917] [2021-11-25 17:49:50,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748000917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:50,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:50,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:50,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491996888] [2021-11-25 17:49:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:50,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:50,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:50,994 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) [2021-11-25 17:49:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:51,353 INFO L93 Difference]: Finished difference Result 943 states and 2682 transitions. [2021-11-25 17:49:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:49:51,353 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 [2021-11-25 17:49:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:51,355 INFO L225 Difference]: With dead ends: 943 [2021-11-25 17:49:51,355 INFO L226 Difference]: Without dead ends: 924 [2021-11-25 17:49:51,355 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 [2021-11-25 17:49:51,357 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:51,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:49:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-11-25 17:49:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 880. [2021-11-25 17:49:51,374 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) [2021-11-25 17:49:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2554 transitions. [2021-11-25 17:49:51,376 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2554 transitions. Word has length 36 [2021-11-25 17:49:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:51,377 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2554 transitions. [2021-11-25 17:49:51,377 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) [2021-11-25 17:49:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2554 transitions. [2021-11-25 17:49:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:51,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:51,379 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] [2021-11-25 17:49:51,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-25 17:49:51,380 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash 104698672, now seen corresponding path program 21 times [2021-11-25 17:49:51,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:51,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444424474] [2021-11-25 17:49:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:51,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:51,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444424474] [2021-11-25 17:49:51,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444424474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:51,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:51,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:51,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928068121] [2021-11-25 17:49:51,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:51,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:51,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:51,797 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) [2021-11-25 17:49:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:52,101 INFO L93 Difference]: Finished difference Result 923 states and 2650 transitions. [2021-11-25 17:49:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:49:52,102 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 [2021-11-25 17:49:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:52,103 INFO L225 Difference]: With dead ends: 923 [2021-11-25 17:49:52,103 INFO L226 Difference]: Without dead ends: 912 [2021-11-25 17:49:52,103 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 [2021-11-25 17:49:52,104 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:52,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:49:52,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-11-25 17:49:52,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 882. [2021-11-25 17:49:52,120 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) [2021-11-25 17:49:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2557 transitions. [2021-11-25 17:49:52,123 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2557 transitions. Word has length 36 [2021-11-25 17:49:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:52,123 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2557 transitions. [2021-11-25 17:49:52,123 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) [2021-11-25 17:49:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2557 transitions. [2021-11-25 17:49:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:52,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:52,126 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] [2021-11-25 17:49:52,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-25 17:49:52,126 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:52,126 INFO L85 PathProgramCache]: Analyzing trace with hash -845751342, now seen corresponding path program 22 times [2021-11-25 17:49:52,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:52,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817081043] [2021-11-25 17:49:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:52,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:52,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:52,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817081043] [2021-11-25 17:49:52,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817081043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:52,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:52,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:52,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23036411] [2021-11-25 17:49:52,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:52,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:49:52,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:49:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:52,455 INFO L87 Difference]: Start difference. First operand 882 states and 2557 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) 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) [2021-11-25 17:49:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:52,881 INFO L93 Difference]: Finished difference Result 923 states and 2645 transitions. [2021-11-25 17:49:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) 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 [2021-11-25 17:49:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:52,883 INFO L225 Difference]: With dead ends: 923 [2021-11-25 17:49:52,883 INFO L226 Difference]: Without dead ends: 908 [2021-11-25 17:49:52,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:52,884 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:52,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:49:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-25 17:49:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 880. [2021-11-25 17:49:52,894 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) [2021-11-25 17:49:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2552 transitions. [2021-11-25 17:49:52,896 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2552 transitions. Word has length 36 [2021-11-25 17:49:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:52,896 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2552 transitions. [2021-11-25 17:49:52,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) 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) [2021-11-25 17:49:52,896 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2552 transitions. [2021-11-25 17:49:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:52,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:52,897 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] [2021-11-25 17:49:52,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-25 17:49:52,898 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:52,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:52,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1876149106, now seen corresponding path program 23 times [2021-11-25 17:49:52,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:52,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747733038] [2021-11-25 17:49:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:52,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:53,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:53,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747733038] [2021-11-25 17:49:53,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747733038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:53,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:53,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:53,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571502767] [2021-11-25 17:49:53,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:53,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:53,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:53,100 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) [2021-11-25 17:49:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:53,431 INFO L93 Difference]: Finished difference Result 942 states and 2671 transitions. [2021-11-25 17:49:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:49:53,431 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 [2021-11-25 17:49:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:53,433 INFO L225 Difference]: With dead ends: 942 [2021-11-25 17:49:53,433 INFO L226 Difference]: Without dead ends: 928 [2021-11-25 17:49:53,433 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 [2021-11-25 17:49:53,433 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:53,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:49:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-25 17:49:53,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 883. [2021-11-25 17:49:53,444 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) [2021-11-25 17:49:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2556 transitions. [2021-11-25 17:49:53,445 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2556 transitions. Word has length 36 [2021-11-25 17:49:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:53,446 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 2556 transitions. [2021-11-25 17:49:53,446 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) [2021-11-25 17:49:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2556 transitions. [2021-11-25 17:49:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:53,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:53,447 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] [2021-11-25 17:49:53,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-25 17:49:53,447 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 868613076, now seen corresponding path program 24 times [2021-11-25 17:49:53,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265046310] [2021-11-25 17:49:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:53,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:53,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:53,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265046310] [2021-11-25 17:49:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265046310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:53,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:53,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:53,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30140626] [2021-11-25 17:49:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:53,753 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) [2021-11-25 17:49:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:54,101 INFO L93 Difference]: Finished difference Result 928 states and 2648 transitions. [2021-11-25 17:49:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:49:54,102 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 [2021-11-25 17:49:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:54,103 INFO L225 Difference]: With dead ends: 928 [2021-11-25 17:49:54,103 INFO L226 Difference]: Without dead ends: 905 [2021-11-25 17:49:54,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:49:54,104 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 [2021-11-25 17:49:54,104 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] [2021-11-25 17:49:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-25 17:49:54,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 876. [2021-11-25 17:49:54,114 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) [2021-11-25 17:49:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2538 transitions. [2021-11-25 17:49:54,115 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2538 transitions. Word has length 36 [2021-11-25 17:49:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:54,116 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2538 transitions. [2021-11-25 17:49:54,116 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) [2021-11-25 17:49:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2538 transitions. [2021-11-25 17:49:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:54,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:54,117 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] [2021-11-25 17:49:54,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-25 17:49:54,117 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash -704576566, now seen corresponding path program 25 times [2021-11-25 17:49:54,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:54,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163681605] [2021-11-25 17:49:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:54,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:54,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:54,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163681605] [2021-11-25 17:49:54,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163681605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:54,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:54,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:54,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554350518] [2021-11-25 17:49:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:54,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:54,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:54,522 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) [2021-11-25 17:49:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:54,905 INFO L93 Difference]: Finished difference Result 1039 states and 2897 transitions. [2021-11-25 17:49:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:54,906 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 [2021-11-25 17:49:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:54,907 INFO L225 Difference]: With dead ends: 1039 [2021-11-25 17:49:54,907 INFO L226 Difference]: Without dead ends: 1028 [2021-11-25 17:49:54,907 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 [2021-11-25 17:49:54,908 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 [2021-11-25 17:49:54,908 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] [2021-11-25 17:49:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-25 17:49:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 926. [2021-11-25 17:49:54,934 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) [2021-11-25 17:49:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2674 transitions. [2021-11-25 17:49:54,935 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2674 transitions. Word has length 36 [2021-11-25 17:49:54,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:54,935 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 2674 transitions. [2021-11-25 17:49:54,935 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) [2021-11-25 17:49:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2674 transitions. [2021-11-25 17:49:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:54,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:54,937 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] [2021-11-25 17:49:54,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-25 17:49:54,937 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -702792628, now seen corresponding path program 26 times [2021-11-25 17:49:54,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112560524] [2021-11-25 17:49:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:54,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:55,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:55,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112560524] [2021-11-25 17:49:55,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112560524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:55,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:55,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:55,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935802201] [2021-11-25 17:49:55,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:55,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:55,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:55,293 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) [2021-11-25 17:49:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:55,671 INFO L93 Difference]: Finished difference Result 1051 states and 2906 transitions. [2021-11-25 17:49:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:55,672 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 [2021-11-25 17:49:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:55,673 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 17:49:55,673 INFO L226 Difference]: Without dead ends: 1032 [2021-11-25 17:49:55,673 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 [2021-11-25 17:49:55,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2021-11-25 17:49:55,674 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] [2021-11-25 17:49:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-25 17:49:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 921. [2021-11-25 17:49:55,691 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) [2021-11-25 17:49:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2655 transitions. [2021-11-25 17:49:55,694 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2655 transitions. Word has length 36 [2021-11-25 17:49:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:55,694 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 2655 transitions. [2021-11-25 17:49:55,694 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) [2021-11-25 17:49:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2655 transitions. [2021-11-25 17:49:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:55,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:55,697 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] [2021-11-25 17:49:55,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-25 17:49:55,697 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash -191531900, now seen corresponding path program 27 times [2021-11-25 17:49:55,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:55,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311744151] [2021-11-25 17:49:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:55,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:55,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:55,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311744151] [2021-11-25 17:49:55,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311744151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:55,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:55,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:55,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071173790] [2021-11-25 17:49:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:55,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:55,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:55,994 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) [2021-11-25 17:49:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:56,466 INFO L93 Difference]: Finished difference Result 1089 states and 2971 transitions. [2021-11-25 17:49:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:56,467 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 [2021-11-25 17:49:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:56,468 INFO L225 Difference]: With dead ends: 1089 [2021-11-25 17:49:56,468 INFO L226 Difference]: Without dead ends: 1042 [2021-11-25 17:49:56,468 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 [2021-11-25 17:49:56,469 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 [2021-11-25 17:49:56,469 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] [2021-11-25 17:49:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-11-25 17:49:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 886. [2021-11-25 17:49:56,480 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) [2021-11-25 17:49:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2552 transitions. [2021-11-25 17:49:56,481 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2552 transitions. Word has length 36 [2021-11-25 17:49:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:56,482 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2552 transitions. [2021-11-25 17:49:56,482 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) [2021-11-25 17:49:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2552 transitions. [2021-11-25 17:49:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:56,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:56,483 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] [2021-11-25 17:49:56,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-25 17:49:56,483 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1353711044, now seen corresponding path program 28 times [2021-11-25 17:49:56,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:56,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212171620] [2021-11-25 17:49:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:56,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:56,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:56,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212171620] [2021-11-25 17:49:56,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212171620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:56,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:56,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:56,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674658176] [2021-11-25 17:49:56,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:56,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:56,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:56,975 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) [2021-11-25 17:49:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:57,299 INFO L93 Difference]: Finished difference Result 926 states and 2639 transitions. [2021-11-25 17:49:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:57,300 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 [2021-11-25 17:49:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:57,301 INFO L225 Difference]: With dead ends: 926 [2021-11-25 17:49:57,301 INFO L226 Difference]: Without dead ends: 915 [2021-11-25 17:49:57,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:57,301 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2021-11-25 17:49:57,302 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] [2021-11-25 17:49:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-11-25 17:49:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 900. [2021-11-25 17:49:57,312 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) [2021-11-25 17:49:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2589 transitions. [2021-11-25 17:49:57,313 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2589 transitions. Word has length 36 [2021-11-25 17:49:57,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:57,313 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2589 transitions. [2021-11-25 17:49:57,313 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) [2021-11-25 17:49:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2589 transitions. [2021-11-25 17:49:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:57,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:57,315 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] [2021-11-25 17:49:57,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-25 17:49:57,315 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash 403261030, now seen corresponding path program 29 times [2021-11-25 17:49:57,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:57,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834884987] [2021-11-25 17:49:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:57,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:57,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:57,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834884987] [2021-11-25 17:49:57,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834884987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:57,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:57,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:57,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286651740] [2021-11-25 17:49:57,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:57,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:57,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:57,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:57,963 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) [2021-11-25 17:49:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:58,325 INFO L93 Difference]: Finished difference Result 924 states and 2633 transitions. [2021-11-25 17:49:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:58,326 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 [2021-11-25 17:49:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:58,327 INFO L225 Difference]: With dead ends: 924 [2021-11-25 17:49:58,327 INFO L226 Difference]: Without dead ends: 913 [2021-11-25 17:49:58,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:49:58,328 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 [2021-11-25 17:49:58,328 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] [2021-11-25 17:49:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-11-25 17:49:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 898. [2021-11-25 17:49:58,338 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) [2021-11-25 17:49:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 2582 transitions. [2021-11-25 17:49:58,339 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 2582 transitions. Word has length 36 [2021-11-25 17:49:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:58,340 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 2582 transitions. [2021-11-25 17:49:58,340 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) [2021-11-25 17:49:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 2582 transitions. [2021-11-25 17:49:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:58,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:58,341 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] [2021-11-25 17:49:58,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-25 17:49:58,341 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:58,342 INFO L85 PathProgramCache]: Analyzing trace with hash -926856628, now seen corresponding path program 30 times [2021-11-25 17:49:58,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:58,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640948055] [2021-11-25 17:49:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:58,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:58,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:58,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640948055] [2021-11-25 17:49:58,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640948055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:58,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:58,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:58,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461617567] [2021-11-25 17:49:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:58,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:58,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:58,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:58,756 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) [2021-11-25 17:49:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:59,110 INFO L93 Difference]: Finished difference Result 972 states and 2715 transitions. [2021-11-25 17:49:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:59,110 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 [2021-11-25 17:49:59,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:59,112 INFO L225 Difference]: With dead ends: 972 [2021-11-25 17:49:59,112 INFO L226 Difference]: Without dead ends: 904 [2021-11-25 17:49:59,112 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 [2021-11-25 17:49:59,113 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-11-25 17:49:59,113 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] [2021-11-25 17:49:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-25 17:49:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 820. [2021-11-25 17:49:59,125 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) [2021-11-25 17:49:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2362 transitions. [2021-11-25 17:49:59,127 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2362 transitions. Word has length 36 [2021-11-25 17:49:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:59,127 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2362 transitions. [2021-11-25 17:49:59,127 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) [2021-11-25 17:49:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2362 transitions. [2021-11-25 17:49:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:49:59,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:59,129 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] [2021-11-25 17:49:59,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-25 17:49:59,129 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:49:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash -798539952, now seen corresponding path program 34 times [2021-11-25 17:49:59,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:59,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509037047] [2021-11-25 17:49:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:59,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:49:59,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509037047] [2021-11-25 17:49:59,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509037047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:59,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:59,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:49:59,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199757759] [2021-11-25 17:49:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:59,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:49:59,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:49:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:49:59,486 INFO L87 Difference]: Start difference. First operand 820 states and 2362 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) [2021-11-25 17:50:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:00,309 INFO L93 Difference]: Finished difference Result 1713 states and 4792 transitions. [2021-11-25 17:50:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:00,310 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 [2021-11-25 17:50:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:00,312 INFO L225 Difference]: With dead ends: 1713 [2021-11-25 17:50:00,312 INFO L226 Difference]: Without dead ends: 1706 [2021-11-25 17:50:00,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:00,313 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:00,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-25 17:50:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 834. [2021-11-25 17:50:00,329 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) [2021-11-25 17:50:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-25 17:50:00,332 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-25 17:50:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:00,332 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-25 17:50:00,332 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) [2021-11-25 17:50:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-25 17:50:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:00,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:00,334 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] [2021-11-25 17:50:00,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-25 17:50:00,335 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1294311498, now seen corresponding path program 35 times [2021-11-25 17:50:00,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983477536] [2021-11-25 17:50:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:00,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:00,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:00,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983477536] [2021-11-25 17:50:00,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983477536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:00,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:00,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:00,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401343764] [2021-11-25 17:50:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:00,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:00,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:00,727 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) [2021-11-25 17:50:02,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:02,287 INFO L93 Difference]: Finished difference Result 1839 states and 5092 transitions. [2021-11-25 17:50:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:50:02,287 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 [2021-11-25 17:50:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:02,290 INFO L225 Difference]: With dead ends: 1839 [2021-11-25 17:50:02,290 INFO L226 Difference]: Without dead ends: 1832 [2021-11-25 17:50:02,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-11-25 17:50:02,291 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 289 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:02,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 0 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:50:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-11-25 17:50:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 844. [2021-11-25 17:50:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.8873072360616843) internal successors, (2434), 843 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2434 transitions. [2021-11-25 17:50:02,339 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2434 transitions. Word has length 36 [2021-11-25 17:50:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:02,339 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2434 transitions. [2021-11-25 17:50:02,339 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) [2021-11-25 17:50:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2434 transitions. [2021-11-25 17:50:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:02,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:02,342 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] [2021-11-25 17:50:02,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-25 17:50:02,342 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1703732872, now seen corresponding path program 36 times [2021-11-25 17:50:02,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:02,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772587999] [2021-11-25 17:50:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:02,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:02,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:02,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772587999] [2021-11-25 17:50:02,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772587999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:02,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:02,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:02,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105298056] [2021-11-25 17:50:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:02,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:02,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:02,765 INFO L87 Difference]: Start difference. First operand 844 states and 2434 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) [2021-11-25 17:50:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:03,402 INFO L93 Difference]: Finished difference Result 1733 states and 4845 transitions. [2021-11-25 17:50:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:03,402 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 [2021-11-25 17:50:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:03,405 INFO L225 Difference]: With dead ends: 1733 [2021-11-25 17:50:03,405 INFO L226 Difference]: Without dead ends: 1719 [2021-11-25 17:50:03,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:03,405 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 269 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:03,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 0 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:03,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-25 17:50:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 849. [2021-11-25 17:50:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.88561320754717) internal successors, (2447), 848 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2447 transitions. [2021-11-25 17:50:03,425 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2447 transitions. Word has length 36 [2021-11-25 17:50:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:03,426 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2447 transitions. [2021-11-25 17:50:03,426 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) [2021-11-25 17:50:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2447 transitions. [2021-11-25 17:50:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:03,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:03,427 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, 1, 1] [2021-11-25 17:50:03,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-25 17:50:03,427 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1729386664, now seen corresponding path program 37 times [2021-11-25 17:50:03,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59658174] [2021-11-25 17:50:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:03,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:03,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:03,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59658174] [2021-11-25 17:50:03,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59658174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:03,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:03,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:03,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095297244] [2021-11-25 17:50:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:03,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:03,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:03,816 INFO L87 Difference]: Start difference. First operand 849 states and 2447 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) [2021-11-25 17:50:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:04,476 INFO L93 Difference]: Finished difference Result 1745 states and 4866 transitions. [2021-11-25 17:50:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:04,477 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 [2021-11-25 17:50:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:04,479 INFO L225 Difference]: With dead ends: 1745 [2021-11-25 17:50:04,479 INFO L226 Difference]: Without dead ends: 1738 [2021-11-25 17:50:04,480 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 [2021-11-25 17:50:04,480 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:04,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-25 17:50:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 834. [2021-11-25 17:50:04,495 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) [2021-11-25 17:50:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-25 17:50:04,496 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-25 17:50:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:04,496 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-25 17:50:04,496 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) [2021-11-25 17:50:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-25 17:50:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:04,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:04,498 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] [2021-11-25 17:50:04,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-25 17:50:04,498 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1854266196, now seen corresponding path program 38 times [2021-11-25 17:50:04,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:04,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479571150] [2021-11-25 17:50:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:04,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:04,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:04,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479571150] [2021-11-25 17:50:04,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479571150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:04,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:04,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:04,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061209878] [2021-11-25 17:50:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:04,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:04,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:04,982 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) [2021-11-25 17:50:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:07,028 INFO L93 Difference]: Finished difference Result 2010 states and 5477 transitions. [2021-11-25 17:50:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:50:07,028 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 [2021-11-25 17:50:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:07,031 INFO L225 Difference]: With dead ends: 2010 [2021-11-25 17:50:07,031 INFO L226 Difference]: Without dead ends: 2003 [2021-11-25 17:50:07,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:50:07,032 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:07,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:50:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-11-25 17:50:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 838. [2021-11-25 17:50:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.891278375149343) internal successors, (2420), 837 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) [2021-11-25 17:50:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2420 transitions. [2021-11-25 17:50:07,050 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2420 transitions. Word has length 36 [2021-11-25 17:50:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:07,050 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2420 transitions. [2021-11-25 17:50:07,051 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) [2021-11-25 17:50:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2420 transitions. [2021-11-25 17:50:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:07,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:07,052 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] [2021-11-25 17:50:07,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-25 17:50:07,052 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 609678224, now seen corresponding path program 39 times [2021-11-25 17:50:07,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:07,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558663310] [2021-11-25 17:50:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:07,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:07,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:07,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558663310] [2021-11-25 17:50:07,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558663310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:07,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:07,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:07,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907357080] [2021-11-25 17:50:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:07,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:07,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:07,507 INFO L87 Difference]: Start difference. First operand 838 states and 2420 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) [2021-11-25 17:50:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:09,256 INFO L93 Difference]: Finished difference Result 1926 states and 5306 transitions. [2021-11-25 17:50:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 17:50:09,258 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 [2021-11-25 17:50:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:09,260 INFO L225 Difference]: With dead ends: 1926 [2021-11-25 17:50:09,261 INFO L226 Difference]: Without dead ends: 1919 [2021-11-25 17:50:09,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:50:09,261 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 281 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:09,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:50:09,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2021-11-25 17:50:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 844. [2021-11-25 17:50:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.8956109134045076) internal successors, (2441), 843 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) [2021-11-25 17:50:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2441 transitions. [2021-11-25 17:50:09,282 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2441 transitions. Word has length 36 [2021-11-25 17:50:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:09,283 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2441 transitions. [2021-11-25 17:50:09,283 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) [2021-11-25 17:50:09,283 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2441 transitions. [2021-11-25 17:50:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:09,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:09,284 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] [2021-11-25 17:50:09,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-25 17:50:09,284 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2047172780, now seen corresponding path program 40 times [2021-11-25 17:50:09,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886526370] [2021-11-25 17:50:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:09,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:09,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:09,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886526370] [2021-11-25 17:50:09,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886526370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:09,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:09,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:09,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594976498] [2021-11-25 17:50:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:09,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:09,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:09,673 INFO L87 Difference]: Start difference. First operand 844 states and 2441 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) [2021-11-25 17:50:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:13,473 INFO L93 Difference]: Finished difference Result 2221 states and 6204 transitions. [2021-11-25 17:50:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-25 17:50:13,474 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 [2021-11-25 17:50:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:13,477 INFO L225 Difference]: With dead ends: 2221 [2021-11-25 17:50:13,477 INFO L226 Difference]: Without dead ends: 2214 [2021-11-25 17:50:13,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=508, Invalid=1654, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 17:50:13,478 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 391 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:13,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 0 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:50:13,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-11-25 17:50:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 846. [2021-11-25 17:50:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.899408284023669) internal successors, (2450), 845 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2450 transitions. [2021-11-25 17:50:13,498 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2450 transitions. Word has length 36 [2021-11-25 17:50:13,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:13,498 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2450 transitions. [2021-11-25 17:50:13,498 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) [2021-11-25 17:50:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2450 transitions. [2021-11-25 17:50:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:13,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:13,499 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] [2021-11-25 17:50:13,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-25 17:50:13,499 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1118130022, now seen corresponding path program 41 times [2021-11-25 17:50:13,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416630457] [2021-11-25 17:50:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:13,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:14,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:14,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416630457] [2021-11-25 17:50:14,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416630457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:14,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:14,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:14,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430218480] [2021-11-25 17:50:14,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:14,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:14,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:14,142 INFO L87 Difference]: Start difference. First operand 846 states and 2450 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) [2021-11-25 17:50:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:18,106 INFO L93 Difference]: Finished difference Result 2211 states and 6192 transitions. [2021-11-25 17:50:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-25 17:50:18,109 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 [2021-11-25 17:50:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:18,113 INFO L225 Difference]: With dead ends: 2211 [2021-11-25 17:50:18,113 INFO L226 Difference]: Without dead ends: 2204 [2021-11-25 17:50:18,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=563, Invalid=1789, Unknown=0, NotChecked=0, Total=2352 [2021-11-25 17:50:18,114 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:18,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:50:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-11-25 17:50:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 838. [2021-11-25 17:50:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.891278375149343) internal successors, (2420), 837 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) [2021-11-25 17:50:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2420 transitions. [2021-11-25 17:50:18,134 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2420 transitions. Word has length 36 [2021-11-25 17:50:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:18,134 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2420 transitions. [2021-11-25 17:50:18,134 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) [2021-11-25 17:50:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2420 transitions. [2021-11-25 17:50:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:18,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:18,136 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] [2021-11-25 17:50:18,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-25 17:50:18,137 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 367177190, now seen corresponding path program 42 times [2021-11-25 17:50:18,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:18,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386321643] [2021-11-25 17:50:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:18,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:18,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:18,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386321643] [2021-11-25 17:50:18,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386321643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:18,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:18,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:18,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542526031] [2021-11-25 17:50:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:18,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:18,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:18,451 INFO L87 Difference]: Start difference. First operand 838 states and 2420 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) [2021-11-25 17:50:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:19,115 INFO L93 Difference]: Finished difference Result 1975 states and 5509 transitions. [2021-11-25 17:50:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:19,116 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 [2021-11-25 17:50:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:19,119 INFO L225 Difference]: With dead ends: 1975 [2021-11-25 17:50:19,119 INFO L226 Difference]: Without dead ends: 1968 [2021-11-25 17:50:19,119 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 [2021-11-25 17:50:19,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 278 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:19,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 0 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-11-25 17:50:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 880. [2021-11-25 17:50:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.926052332195677) internal successors, (2572), 879 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2572 transitions. [2021-11-25 17:50:19,139 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2572 transitions. Word has length 36 [2021-11-25 17:50:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:19,139 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2572 transitions. [2021-11-25 17:50:19,139 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) [2021-11-25 17:50:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2572 transitions. [2021-11-25 17:50:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:19,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:19,141 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] [2021-11-25 17:50:19,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-25 17:50:19,141 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1664100116, now seen corresponding path program 43 times [2021-11-25 17:50:19,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381082046] [2021-11-25 17:50:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:19,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:19,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:19,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381082046] [2021-11-25 17:50:19,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381082046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:19,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:19,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:19,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112921198] [2021-11-25 17:50:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:19,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:19,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:19,463 INFO L87 Difference]: Start difference. First operand 880 states and 2572 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) [2021-11-25 17:50:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:20,217 INFO L93 Difference]: Finished difference Result 1967 states and 5490 transitions. [2021-11-25 17:50:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:20,218 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 [2021-11-25 17:50:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:20,221 INFO L225 Difference]: With dead ends: 1967 [2021-11-25 17:50:20,221 INFO L226 Difference]: Without dead ends: 1953 [2021-11-25 17:50:20,221 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 [2021-11-25 17:50:20,221 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:20,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 0 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-11-25 17:50:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 865. [2021-11-25 17:50:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 2.925925925925926) internal successors, (2528), 864 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2528 transitions. [2021-11-25 17:50:20,238 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2528 transitions. Word has length 36 [2021-11-25 17:50:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:20,238 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2528 transitions. [2021-11-25 17:50:20,238 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) [2021-11-25 17:50:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2528 transitions. [2021-11-25 17:50:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:20,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:20,240 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] [2021-11-25 17:50:20,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-25 17:50:20,240 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1887558118, now seen corresponding path program 44 times [2021-11-25 17:50:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:20,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863091328] [2021-11-25 17:50:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:20,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:20,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:20,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863091328] [2021-11-25 17:50:20,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863091328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:20,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:20,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:20,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303809119] [2021-11-25 17:50:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:20,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:20,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:20,712 INFO L87 Difference]: Start difference. First operand 865 states and 2528 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) [2021-11-25 17:50:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:22,533 INFO L93 Difference]: Finished difference Result 2093 states and 5806 transitions. [2021-11-25 17:50:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:50:22,534 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 [2021-11-25 17:50:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:22,537 INFO L225 Difference]: With dead ends: 2093 [2021-11-25 17:50:22,537 INFO L226 Difference]: Without dead ends: 2086 [2021-11-25 17:50:22,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=304, Invalid=752, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:50:22,537 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 324 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:22,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 0 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:50:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2021-11-25 17:50:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 875. [2021-11-25 17:50:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.9382151029748282) internal successors, (2568), 874 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) [2021-11-25 17:50:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2568 transitions. [2021-11-25 17:50:22,567 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2568 transitions. Word has length 36 [2021-11-25 17:50:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:22,567 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2568 transitions. [2021-11-25 17:50:22,567 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) [2021-11-25 17:50:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2568 transitions. [2021-11-25 17:50:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:22,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:22,569 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] [2021-11-25 17:50:22,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-25 17:50:22,570 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1062245594, now seen corresponding path program 45 times [2021-11-25 17:50:22,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:22,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747766925] [2021-11-25 17:50:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:22,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:22,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:22,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747766925] [2021-11-25 17:50:22,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747766925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:22,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:22,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:22,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131680705] [2021-11-25 17:50:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:22,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:22,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:22,946 INFO L87 Difference]: Start difference. First operand 875 states and 2568 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) [2021-11-25 17:50:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:23,601 INFO L93 Difference]: Finished difference Result 2001 states and 5583 transitions. [2021-11-25 17:50:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:23,602 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 [2021-11-25 17:50:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:23,605 INFO L225 Difference]: With dead ends: 2001 [2021-11-25 17:50:23,605 INFO L226 Difference]: Without dead ends: 1994 [2021-11-25 17:50:23,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:23,605 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 187 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:23,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 0 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:23,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-11-25 17:50:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 893. [2021-11-25 17:50:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 2.942825112107623) internal successors, (2625), 892 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 2625 transitions. [2021-11-25 17:50:23,626 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 2625 transitions. Word has length 36 [2021-11-25 17:50:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:23,626 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 2625 transitions. [2021-11-25 17:50:23,626 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) [2021-11-25 17:50:23,626 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 2625 transitions. [2021-11-25 17:50:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:23,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:23,627 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] [2021-11-25 17:50:23,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-25 17:50:23,627 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1991288352, now seen corresponding path program 46 times [2021-11-25 17:50:23,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:23,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152763033] [2021-11-25 17:50:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:23,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:23,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152763033] [2021-11-25 17:50:23,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152763033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:23,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:23,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:23,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953414099] [2021-11-25 17:50:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:23,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:23,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:23,953 INFO L87 Difference]: Start difference. First operand 893 states and 2625 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) [2021-11-25 17:50:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:24,576 INFO L93 Difference]: Finished difference Result 2015 states and 5606 transitions. [2021-11-25 17:50:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:24,576 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 [2021-11-25 17:50:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:24,579 INFO L225 Difference]: With dead ends: 2015 [2021-11-25 17:50:24,579 INFO L226 Difference]: Without dead ends: 2008 [2021-11-25 17:50:24,579 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 [2021-11-25 17:50:24,580 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 227 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:24,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 0 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:50:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-11-25 17:50:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 865. [2021-11-25 17:50:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 2.925925925925926) internal successors, (2528), 864 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2528 transitions. [2021-11-25 17:50:24,598 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2528 transitions. Word has length 36 [2021-11-25 17:50:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:24,598 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2528 transitions. [2021-11-25 17:50:24,598 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) [2021-11-25 17:50:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2528 transitions. [2021-11-25 17:50:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:24,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:24,600 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] [2021-11-25 17:50:24,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-25 17:50:24,600 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1018208904, now seen corresponding path program 47 times [2021-11-25 17:50:24,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:24,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5667350] [2021-11-25 17:50:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:24,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:25,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:25,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5667350] [2021-11-25 17:50:25,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5667350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:25,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:25,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:25,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674405086] [2021-11-25 17:50:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:25,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:25,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:25,039 INFO L87 Difference]: Start difference. First operand 865 states and 2528 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) [2021-11-25 17:50:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:25,749 INFO L93 Difference]: Finished difference Result 1919 states and 5380 transitions. [2021-11-25 17:50:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:25,750 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 [2021-11-25 17:50:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:25,752 INFO L225 Difference]: With dead ends: 1919 [2021-11-25 17:50:25,752 INFO L226 Difference]: Without dead ends: 1905 [2021-11-25 17:50:25,753 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 [2021-11-25 17:50:25,753 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 192 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:25,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2021-11-25 17:50:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 874. [2021-11-25 17:50:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 2.919816723940435) internal successors, (2549), 873 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 2549 transitions. [2021-11-25 17:50:25,770 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 2549 transitions. Word has length 36 [2021-11-25 17:50:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:25,770 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 2549 transitions. [2021-11-25 17:50:25,770 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) [2021-11-25 17:50:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 2549 transitions. [2021-11-25 17:50:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:25,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:25,771 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] [2021-11-25 17:50:25,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-25 17:50:25,771 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash -259829548, now seen corresponding path program 48 times [2021-11-25 17:50:25,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:25,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768947932] [2021-11-25 17:50:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:25,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:26,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:26,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768947932] [2021-11-25 17:50:26,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768947932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:26,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:26,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:26,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110185878] [2021-11-25 17:50:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:26,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:26,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:26,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:26,142 INFO L87 Difference]: Start difference. First operand 874 states and 2549 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) [2021-11-25 17:50:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:26,891 INFO L93 Difference]: Finished difference Result 1919 states and 5378 transitions. [2021-11-25 17:50:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:26,892 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 [2021-11-25 17:50:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:26,895 INFO L225 Difference]: With dead ends: 1919 [2021-11-25 17:50:26,895 INFO L226 Difference]: Without dead ends: 1912 [2021-11-25 17:50:26,895 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 [2021-11-25 17:50:26,895 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:26,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-11-25 17:50:26,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 838. [2021-11-25 17:50:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.891278375149343) internal successors, (2420), 837 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) [2021-11-25 17:50:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2420 transitions. [2021-11-25 17:50:26,912 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2420 transitions. Word has length 36 [2021-11-25 17:50:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:26,912 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2420 transitions. [2021-11-25 17:50:26,912 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) [2021-11-25 17:50:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2420 transitions. [2021-11-25 17:50:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:26,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:26,913 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] [2021-11-25 17:50:26,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-25 17:50:26,913 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash -598621978, now seen corresponding path program 49 times [2021-11-25 17:50:26,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:26,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890534110] [2021-11-25 17:50:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:26,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:27,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:27,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890534110] [2021-11-25 17:50:27,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890534110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:27,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:27,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:27,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178767738] [2021-11-25 17:50:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:27,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:27,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:27,233 INFO L87 Difference]: Start difference. First operand 838 states and 2420 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) [2021-11-25 17:50:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:27,972 INFO L93 Difference]: Finished difference Result 1923 states and 5306 transitions. [2021-11-25 17:50:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:27,972 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 [2021-11-25 17:50:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:27,975 INFO L225 Difference]: With dead ends: 1923 [2021-11-25 17:50:27,975 INFO L226 Difference]: Without dead ends: 1916 [2021-11-25 17:50:27,975 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 [2021-11-25 17:50:27,975 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:27,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2021-11-25 17:50:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 862. [2021-11-25 17:50:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.896631823461092) internal successors, (2494), 861 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2494 transitions. [2021-11-25 17:50:27,994 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2494 transitions. Word has length 36 [2021-11-25 17:50:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:27,995 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2494 transitions. [2021-11-25 17:50:27,995 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) [2021-11-25 17:50:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2494 transitions. [2021-11-25 17:50:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:27,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:27,996 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] [2021-11-25 17:50:27,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-25 17:50:27,996 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 838872578, now seen corresponding path program 50 times [2021-11-25 17:50:27,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:27,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957865222] [2021-11-25 17:50:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:27,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:28,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:28,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957865222] [2021-11-25 17:50:28,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957865222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:28,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:28,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:28,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047974352] [2021-11-25 17:50:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:28,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:28,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:28,519 INFO L87 Difference]: Start difference. First operand 862 states and 2494 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) [2021-11-25 17:50:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:33,426 INFO L93 Difference]: Finished difference Result 2396 states and 6631 transitions. [2021-11-25 17:50:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-25 17:50:33,426 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 [2021-11-25 17:50:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:33,430 INFO L225 Difference]: With dead ends: 2396 [2021-11-25 17:50:33,430 INFO L226 Difference]: Without dead ends: 2389 [2021-11-25 17:50:33,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2021-11-25 17:50:33,431 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:33,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:50:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-25 17:50:33,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 860. [2021-11-25 17:50:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 2.8952270081490106) internal successors, (2487), 859 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) [2021-11-25 17:50:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2487 transitions. [2021-11-25 17:50:33,464 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2487 transitions. Word has length 36 [2021-11-25 17:50:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:33,464 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2487 transitions. [2021-11-25 17:50:33,464 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) [2021-11-25 17:50:33,465 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2487 transitions. [2021-11-25 17:50:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:33,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:33,466 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] [2021-11-25 17:50:33,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-25 17:50:33,466 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1188574442, now seen corresponding path program 51 times [2021-11-25 17:50:33,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:33,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989163838] [2021-11-25 17:50:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:33,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:33,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989163838] [2021-11-25 17:50:33,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989163838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:33,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:33,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:33,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965110656] [2021-11-25 17:50:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:33,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:33,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:33,810 INFO L87 Difference]: Start difference. First operand 860 states and 2487 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) [2021-11-25 17:50:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:34,505 INFO L93 Difference]: Finished difference Result 1893 states and 5246 transitions. [2021-11-25 17:50:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:34,505 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 [2021-11-25 17:50:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:34,508 INFO L225 Difference]: With dead ends: 1893 [2021-11-25 17:50:34,508 INFO L226 Difference]: Without dead ends: 1886 [2021-11-25 17:50:34,508 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 [2021-11-25 17:50:34,508 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:34,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-11-25 17:50:34,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 840. [2021-11-25 17:50:34,523 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) [2021-11-25 17:50:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2425 transitions. [2021-11-25 17:50:34,524 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2425 transitions. Word has length 36 [2021-11-25 17:50:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:34,524 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 2425 transitions. [2021-11-25 17:50:34,524 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) [2021-11-25 17:50:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2425 transitions. [2021-11-25 17:50:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:34,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:34,526 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] [2021-11-25 17:50:34,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-25 17:50:34,526 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:34,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1317167274, now seen corresponding path program 52 times [2021-11-25 17:50:34,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:34,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815172538] [2021-11-25 17:50:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:34,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:34,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:34,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815172538] [2021-11-25 17:50:34,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815172538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:34,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:34,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:34,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253109351] [2021-11-25 17:50:34,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:34,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:34,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:34,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:34,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:34,935 INFO L87 Difference]: Start difference. First operand 840 states and 2425 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) [2021-11-25 17:50:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:37,017 INFO L93 Difference]: Finished difference Result 2053 states and 5625 transitions. [2021-11-25 17:50:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:50:37,017 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 [2021-11-25 17:50:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:37,020 INFO L225 Difference]: With dead ends: 2053 [2021-11-25 17:50:37,020 INFO L226 Difference]: Without dead ends: 2046 [2021-11-25 17:50:37,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=301, Invalid=755, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:50:37,021 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 238 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:37,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 0 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:50:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-11-25 17:50:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 834. [2021-11-25 17:50:37,037 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) [2021-11-25 17:50:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 2408 transitions. [2021-11-25 17:50:37,039 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 2408 transitions. Word has length 36 [2021-11-25 17:50:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:37,039 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 2408 transitions. [2021-11-25 17:50:37,039 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) [2021-11-25 17:50:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2408 transitions. [2021-11-25 17:50:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:37,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:37,041 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] [2021-11-25 17:50:37,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-25 17:50:37,041 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:37,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash -718222162, now seen corresponding path program 53 times [2021-11-25 17:50:37,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:37,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809776900] [2021-11-25 17:50:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:37,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:37,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809776900] [2021-11-25 17:50:37,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809776900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:37,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:37,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:37,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318434635] [2021-11-25 17:50:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:37,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:37,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:37,800 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) [2021-11-25 17:50:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:41,708 INFO L93 Difference]: Finished difference Result 1337 states and 3509 transitions. [2021-11-25 17:50:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 17:50:41,708 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 [2021-11-25 17:50:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:41,710 INFO L225 Difference]: With dead ends: 1337 [2021-11-25 17:50:41,710 INFO L226 Difference]: Without dead ends: 1330 [2021-11-25 17:50:41,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:50:41,710 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:41,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:50:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-11-25 17:50:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 844. [2021-11-25 17:50:41,722 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) [2021-11-25 17:50:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2435 transitions. [2021-11-25 17:50:41,724 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2435 transitions. Word has length 36 [2021-11-25 17:50:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:41,724 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2435 transitions. [2021-11-25 17:50:41,724 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) [2021-11-25 17:50:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2435 transitions. [2021-11-25 17:50:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:41,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:41,725 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] [2021-11-25 17:50:41,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-25 17:50:41,726 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1448989820, now seen corresponding path program 54 times [2021-11-25 17:50:41,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:41,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859307190] [2021-11-25 17:50:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:41,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:42,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:42,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859307190] [2021-11-25 17:50:42,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859307190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:42,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:42,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:42,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615447715] [2021-11-25 17:50:42,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:42,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:42,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:42,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:42,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:42,322 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) [2021-11-25 17:50:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:43,304 INFO L93 Difference]: Finished difference Result 1351 states and 3542 transitions. [2021-11-25 17:50:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:43,305 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 [2021-11-25 17:50:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:43,306 INFO L225 Difference]: With dead ends: 1351 [2021-11-25 17:50:43,307 INFO L226 Difference]: Without dead ends: 1344 [2021-11-25 17:50:43,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:43,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 232 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:43,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 0 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:50:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-25 17:50:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 862. [2021-11-25 17:50:43,333 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) [2021-11-25 17:50:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2492 transitions. [2021-11-25 17:50:43,335 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2492 transitions. Word has length 36 [2021-11-25 17:50:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:43,335 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2492 transitions. [2021-11-25 17:50:43,335 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) [2021-11-25 17:50:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2492 transitions. [2021-11-25 17:50:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:43,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:43,336 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] [2021-11-25 17:50:43,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-25 17:50:43,337 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1916934718, now seen corresponding path program 55 times [2021-11-25 17:50:43,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:43,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870950566] [2021-11-25 17:50:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:43,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:43,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:43,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870950566] [2021-11-25 17:50:43,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870950566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:43,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:43,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:43,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495811339] [2021-11-25 17:50:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:43,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:43,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:43,758 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) [2021-11-25 17:50:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:44,750 INFO L93 Difference]: Finished difference Result 1343 states and 3528 transitions. [2021-11-25 17:50:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:44,750 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 [2021-11-25 17:50:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:44,752 INFO L225 Difference]: With dead ends: 1343 [2021-11-25 17:50:44,752 INFO L226 Difference]: Without dead ends: 1336 [2021-11-25 17:50:44,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:44,753 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 172 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:44,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 0 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:50:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-25 17:50:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 838. [2021-11-25 17:50:44,765 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) [2021-11-25 17:50:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2418 transitions. [2021-11-25 17:50:44,767 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2418 transitions. Word has length 36 [2021-11-25 17:50:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:44,767 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2418 transitions. [2021-11-25 17:50:44,768 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) [2021-11-25 17:50:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2418 transitions. [2021-11-25 17:50:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:44,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:44,769 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] [2021-11-25 17:50:44,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-25 17:50:44,770 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash -677429498, now seen corresponding path program 56 times [2021-11-25 17:50:44,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:44,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653027731] [2021-11-25 17:50:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:44,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:45,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:45,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653027731] [2021-11-25 17:50:45,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653027731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:45,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:45,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:45,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369326630] [2021-11-25 17:50:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:45,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:45,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:45,320 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) [2021-11-25 17:50:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:46,724 INFO L93 Difference]: Finished difference Result 1237 states and 3305 transitions. [2021-11-25 17:50:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:46,725 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 [2021-11-25 17:50:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:46,727 INFO L225 Difference]: With dead ends: 1237 [2021-11-25 17:50:46,727 INFO L226 Difference]: Without dead ends: 1230 [2021-11-25 17:50:46,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:46,727 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 160 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:46,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:50:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-25 17:50:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 844. [2021-11-25 17:50:46,739 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) [2021-11-25 17:50:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2435 transitions. [2021-11-25 17:50:46,741 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2435 transitions. Word has length 36 [2021-11-25 17:50:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:46,741 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2435 transitions. [2021-11-25 17:50:46,741 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) [2021-11-25 17:50:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2435 transitions. [2021-11-25 17:50:46,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:46,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:46,742 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] [2021-11-25 17:50:46,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-25 17:50:46,742 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1786514922, now seen corresponding path program 57 times [2021-11-25 17:50:46,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:46,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080819382] [2021-11-25 17:50:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:46,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:47,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:47,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080819382] [2021-11-25 17:50:47,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080819382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:47,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:47,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:50:47,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295322801] [2021-11-25 17:50:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:47,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:50:47,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:47,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:50:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:50:47,199 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) [2021-11-25 17:50:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:48,201 INFO L93 Difference]: Finished difference Result 1305 states and 3457 transitions. [2021-11-25 17:50:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:50:48,201 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 [2021-11-25 17:50:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:48,203 INFO L225 Difference]: With dead ends: 1305 [2021-11-25 17:50:48,203 INFO L226 Difference]: Without dead ends: 1298 [2021-11-25 17:50:48,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:50:48,204 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 187 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:48,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 0 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:50:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-25 17:50:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 862. [2021-11-25 17:50:48,219 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) [2021-11-25 17:50:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2492 transitions. [2021-11-25 17:50:48,220 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2492 transitions. Word has length 36 [2021-11-25 17:50:48,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:48,221 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2492 transitions. [2021-11-25 17:50:48,221 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) [2021-11-25 17:50:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2492 transitions. [2021-11-25 17:50:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:48,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:48,222 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] [2021-11-25 17:50:48,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-25 17:50:48,222 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1070957818, now seen corresponding path program 58 times [2021-11-25 17:50:48,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539613121] [2021-11-25 17:50:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:48,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:48,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539613121] [2021-11-25 17:50:48,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539613121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:48,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:48,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:48,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566273867] [2021-11-25 17:50:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:48,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:48,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:48,857 INFO L87 Difference]: Start difference. First operand 862 states and 2492 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) [2021-11-25 17:50:51,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:51,124 INFO L93 Difference]: Finished difference Result 1329 states and 3532 transitions. [2021-11-25 17:50:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:50:51,124 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 [2021-11-25 17:50:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:51,126 INFO L225 Difference]: With dead ends: 1329 [2021-11-25 17:50:51,126 INFO L226 Difference]: Without dead ends: 1322 [2021-11-25 17:50:51,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:50:51,127 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 186 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:51,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 0 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:50:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-25 17:50:51,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 860. [2021-11-25 17:50:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 2.892898719441211) internal successors, (2485), 859 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:50:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2485 transitions. [2021-11-25 17:50:51,139 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2485 transitions. Word has length 36 [2021-11-25 17:50:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:51,140 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2485 transitions. [2021-11-25 17:50:51,140 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) [2021-11-25 17:50:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2485 transitions. [2021-11-25 17:50:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:51,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:51,141 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] [2021-11-25 17:50:51,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-25 17:50:51,141 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:51,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -721255954, now seen corresponding path program 59 times [2021-11-25 17:50:51,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:51,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568753762] [2021-11-25 17:50:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:51,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:51,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568753762] [2021-11-25 17:50:51,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568753762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:51,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:51,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:51,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28942858] [2021-11-25 17:50:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:51,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:51,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:51,680 INFO L87 Difference]: Start difference. First operand 860 states and 2485 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) [2021-11-25 17:50:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:54,239 INFO L93 Difference]: Finished difference Result 1403 states and 3681 transitions. [2021-11-25 17:50:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 17:50:54,240 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 [2021-11-25 17:50:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:54,242 INFO L225 Difference]: With dead ends: 1403 [2021-11-25 17:50:54,242 INFO L226 Difference]: Without dead ends: 1396 [2021-11-25 17:50:54,242 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 [2021-11-25 17:50:54,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:54,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:50:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-25 17:50:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 856. [2021-11-25 17:50:54,257 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) [2021-11-25 17:50:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2471 transitions. [2021-11-25 17:50:54,258 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2471 transitions. Word has length 36 [2021-11-25 17:50:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:54,258 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 2471 transitions. [2021-11-25 17:50:54,259 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) [2021-11-25 17:50:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2471 transitions. [2021-11-25 17:50:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:54,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:54,260 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] [2021-11-25 17:50:54,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-25 17:50:54,260 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:50:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1118182280, now seen corresponding path program 60 times [2021-11-25 17:50:54,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:54,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569887327] [2021-11-25 17:50:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:54,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:50:54,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:54,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569887327] [2021-11-25 17:50:54,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569887327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:54,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:54,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:50:54,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016281017] [2021-11-25 17:50:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:54,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:54,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:50:54,860 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) [2021-11-25 17:51:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:00,315 INFO L93 Difference]: Finished difference Result 1594 states and 4237 transitions. [2021-11-25 17:51:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 17:51:00,316 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 [2021-11-25 17:51:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:00,318 INFO L225 Difference]: With dead ends: 1594 [2021-11-25 17:51:00,318 INFO L226 Difference]: Without dead ends: 1587 [2021-11-25 17:51:00,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=450, Invalid=1356, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 17:51:00,318 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, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:00,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 17:51:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-25 17:51:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 854. [2021-11-25 17:51:00,332 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) [2021-11-25 17:51:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2462 transitions. [2021-11-25 17:51:00,333 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2462 transitions. Word has length 36 [2021-11-25 17:51:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:00,333 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2462 transitions. [2021-11-25 17:51:00,334 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) [2021-11-25 17:51:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2462 transitions. [2021-11-25 17:51:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:00,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:00,335 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] [2021-11-25 17:51:00,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-25 17:51:00,336 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash -800403282, now seen corresponding path program 61 times [2021-11-25 17:51:00,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:00,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434027565] [2021-11-25 17:51:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:00,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:00,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:00,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434027565] [2021-11-25 17:51:00,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434027565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:00,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:00,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:51:00,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496690830] [2021-11-25 17:51:00,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:00,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:51:00,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:51:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:51:00,957 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) [2021-11-25 17:51:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:04,864 INFO L93 Difference]: Finished difference Result 1349 states and 3556 transitions. [2021-11-25 17:51:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 17:51:04,865 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 [2021-11-25 17:51:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:04,867 INFO L225 Difference]: With dead ends: 1349 [2021-11-25 17:51:04,867 INFO L226 Difference]: Without dead ends: 1342 [2021-11-25 17:51:04,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:51:04,867 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 238 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:04,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 0 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:51:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-11-25 17:51:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 836. [2021-11-25 17:51:04,879 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) [2021-11-25 17:51:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2413 transitions. [2021-11-25 17:51:04,880 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2413 transitions. Word has length 36 [2021-11-25 17:51:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:04,880 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2413 transitions. [2021-11-25 17:51:04,880 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) [2021-11-25 17:51:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2413 transitions. [2021-11-25 17:51:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:04,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:04,881 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] [2021-11-25 17:51:04,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-25 17:51:04,882 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1255715018, now seen corresponding path program 62 times [2021-11-25 17:51:04,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:04,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197362736] [2021-11-25 17:51:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:04,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:05,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197362736] [2021-11-25 17:51:05,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197362736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:05,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:05,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:51:05,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834229644] [2021-11-25 17:51:05,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:05,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:51:05,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:05,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:51:05,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:51:05,693 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) [2021-11-25 17:51:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:10,627 INFO L93 Difference]: Finished difference Result 1435 states and 3764 transitions. [2021-11-25 17:51:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 17:51:10,628 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 [2021-11-25 17:51:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:10,631 INFO L225 Difference]: With dead ends: 1435 [2021-11-25 17:51:10,631 INFO L226 Difference]: Without dead ends: 1428 [2021-11-25 17:51:10,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 17:51:10,632 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:10,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 17:51:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-25 17:51:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 846. [2021-11-25 17:51:10,651 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) [2021-11-25 17:51:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2440 transitions. [2021-11-25 17:51:10,653 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2440 transitions. Word has length 36 [2021-11-25 17:51:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:10,653 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2440 transitions. [2021-11-25 17:51:10,654 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) [2021-11-25 17:51:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2440 transitions. [2021-11-25 17:51:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:10,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:10,655 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] [2021-11-25 17:51:10,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-25 17:51:10,656 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:10,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:10,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1986482676, now seen corresponding path program 63 times [2021-11-25 17:51:10,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:10,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070919986] [2021-11-25 17:51:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:10,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:11,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070919986] [2021-11-25 17:51:11,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070919986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:11,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:11,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:51:11,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145406369] [2021-11-25 17:51:11,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:11,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:51:11,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:51:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:51:11,509 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) [2021-11-25 17:51:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:12,392 INFO L93 Difference]: Finished difference Result 1305 states and 3458 transitions. [2021-11-25 17:51:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:51:12,392 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 [2021-11-25 17:51:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:12,394 INFO L225 Difference]: With dead ends: 1305 [2021-11-25 17:51:12,394 INFO L226 Difference]: Without dead ends: 1298 [2021-11-25 17:51:12,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:51:12,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:12,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:51:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-25 17:51:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 868. [2021-11-25 17:51:12,412 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) [2021-11-25 17:51:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2511 transitions. [2021-11-25 17:51:12,415 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2511 transitions. Word has length 36 [2021-11-25 17:51:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:12,415 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2511 transitions. [2021-11-25 17:51:12,415 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) [2021-11-25 17:51:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2511 transitions. [2021-11-25 17:51:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:12,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:12,416 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] [2021-11-25 17:51:12,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-25 17:51:12,417 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:12,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1379441862, now seen corresponding path program 64 times [2021-11-25 17:51:12,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:12,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508831777] [2021-11-25 17:51:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:12,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:13,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:13,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508831777] [2021-11-25 17:51:13,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508831777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:13,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:13,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:51:13,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028005498] [2021-11-25 17:51:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:13,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:51:13,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:13,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:51:13,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:51:13,104 INFO L87 Difference]: Start difference. First operand 868 states and 2511 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) [2021-11-25 17:51:17,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:17,330 INFO L93 Difference]: Finished difference Result 1552 states and 4083 transitions. [2021-11-25 17:51:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:51:17,330 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 [2021-11-25 17:51:17,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:17,332 INFO L225 Difference]: With dead ends: 1552 [2021-11-25 17:51:17,332 INFO L226 Difference]: Without dead ends: 1545 [2021-11-25 17:51:17,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:51:17,333 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:17,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:51:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2021-11-25 17:51:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 866. [2021-11-25 17:51:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 2.8947976878612716) internal successors, (2504), 865 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) [2021-11-25 17:51:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2504 transitions. [2021-11-25 17:51:17,347 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2504 transitions. Word has length 36 [2021-11-25 17:51:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:17,347 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 2504 transitions. [2021-11-25 17:51:17,348 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) [2021-11-25 17:51:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2504 transitions. [2021-11-25 17:51:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:17,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:17,349 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] [2021-11-25 17:51:17,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-25 17:51:17,349 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1671826120, now seen corresponding path program 65 times [2021-11-25 17:51:17,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:17,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248093921] [2021-11-25 17:51:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:17,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:18,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:18,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248093921] [2021-11-25 17:51:18,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248093921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:18,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:18,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:51:18,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131870929] [2021-11-25 17:51:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:18,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:51:18,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:51:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:51:18,049 INFO L87 Difference]: Start difference. First operand 866 states and 2504 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) [2021-11-25 17:51:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:22,382 INFO L93 Difference]: Finished difference Result 1455 states and 3841 transitions. [2021-11-25 17:51:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 17:51:22,383 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 [2021-11-25 17:51:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:22,385 INFO L225 Difference]: With dead ends: 1455 [2021-11-25 17:51:22,385 INFO L226 Difference]: Without dead ends: 1448 [2021-11-25 17:51:22,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 17:51:22,385 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 254 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:22,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 0 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:51:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-11-25 17:51:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 866. [2021-11-25 17:51:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 2.8947976878612716) internal successors, (2504), 865 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) [2021-11-25 17:51:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2504 transitions. [2021-11-25 17:51:22,399 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2504 transitions. Word has length 36 [2021-11-25 17:51:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:22,399 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 2504 transitions. [2021-11-25 17:51:22,399 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) [2021-11-25 17:51:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2504 transitions. [2021-11-25 17:51:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:22,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:22,400 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] [2021-11-25 17:51:22,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-25 17:51:22,400 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2087946946, now seen corresponding path program 66 times [2021-11-25 17:51:22,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:22,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320097566] [2021-11-25 17:51:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:22,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:23,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:23,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320097566] [2021-11-25 17:51:23,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320097566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:23,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:23,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:51:23,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650876113] [2021-11-25 17:51:23,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:23,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:51:23,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:51:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:51:23,025 INFO L87 Difference]: Start difference. First operand 866 states and 2504 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) [2021-11-25 17:51:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:28,043 INFO L93 Difference]: Finished difference Result 1580 states and 4214 transitions. [2021-11-25 17:51:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 17:51:28,043 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 [2021-11-25 17:51:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:28,046 INFO L225 Difference]: With dead ends: 1580 [2021-11-25 17:51:28,046 INFO L226 Difference]: Without dead ends: 1573 [2021-11-25 17:51:28,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 17:51:28,046 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 209 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:28,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 0 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 17:51:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-11-25 17:51:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 862. [2021-11-25 17:51:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.8919860627177703) internal successors, (2490), 861 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2490 transitions. [2021-11-25 17:51:28,061 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2490 transitions. Word has length 36 [2021-11-25 17:51:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:28,061 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2490 transitions. [2021-11-25 17:51:28,061 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) [2021-11-25 17:51:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2490 transitions. [2021-11-25 17:51:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:28,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:28,063 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] [2021-11-25 17:51:28,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-25 17:51:28,063 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash -50346486, now seen corresponding path program 67 times [2021-11-25 17:51:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:28,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138095061] [2021-11-25 17:51:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:28,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:28,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:28,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138095061] [2021-11-25 17:51:28,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138095061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:28,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:28,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:51:28,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331335541] [2021-11-25 17:51:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:28,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:51:28,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:51:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:51:28,671 INFO L87 Difference]: Start difference. First operand 862 states and 2490 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) [2021-11-25 17:51:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:34,555 INFO L93 Difference]: Finished difference Result 1636 states and 4347 transitions. [2021-11-25 17:51:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 17:51:34,556 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 [2021-11-25 17:51:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:34,558 INFO L225 Difference]: With dead ends: 1636 [2021-11-25 17:51:34,558 INFO L226 Difference]: Without dead ends: 1629 [2021-11-25 17:51:34,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=452, Invalid=1354, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 17:51:34,559 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:34,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:51:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-11-25 17:51:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 850. [2021-11-25 17:51:34,572 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) [2021-11-25 17:51:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2460 transitions. [2021-11-25 17:51:34,573 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2460 transitions. Word has length 36 [2021-11-25 17:51:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:34,574 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2460 transitions. [2021-11-25 17:51:34,574 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) [2021-11-25 17:51:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2460 transitions. [2021-11-25 17:51:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:34,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:34,575 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] [2021-11-25 17:51:34,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-25 17:51:34,575 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 312285702, now seen corresponding path program 68 times [2021-11-25 17:51:34,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:34,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572459376] [2021-11-25 17:51:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:34,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:35,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572459376] [2021-11-25 17:51:35,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572459376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:35,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:35,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:51:35,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63296263] [2021-11-25 17:51:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:35,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:51:35,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:51:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:51:35,373 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) [2021-11-25 17:51:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:36,519 INFO L93 Difference]: Finished difference Result 1223 states and 3284 transitions. [2021-11-25 17:51:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:51:36,520 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 [2021-11-25 17:51:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:36,521 INFO L225 Difference]: With dead ends: 1223 [2021-11-25 17:51:36,521 INFO L226 Difference]: Without dead ends: 1216 [2021-11-25 17:51:36,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:51:36,522 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:36,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:51:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-25 17:51:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 852. [2021-11-25 17:51:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 2.8942420681551115) internal successors, (2463), 851 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2463 transitions. [2021-11-25 17:51:36,535 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2463 transitions. Word has length 36 [2021-11-25 17:51:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:36,535 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2463 transitions. [2021-11-25 17:51:36,535 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) [2021-11-25 17:51:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2463 transitions. [2021-11-25 17:51:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:51:36,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:36,536 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] [2021-11-25 17:51:36,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-25 17:51:36,536 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:51:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 705488220, now seen corresponding path program 69 times [2021-11-25 17:51:36,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:36,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122308645] [2021-11-25 17:51:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:36,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:51:37,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:37,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122308645] [2021-11-25 17:51:37,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122308645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:37,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:37,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:51:37,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395966705] [2021-11-25 17:51:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:37,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:51:37,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:37,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:51:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:51:37,012 INFO L87 Difference]: Start difference. First operand 852 states and 2463 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) [2021-11-25 17:51:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:37,930 INFO L93 Difference]: Finished difference Result 1333 states and 3508 transitions. [2021-11-25 17:51:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:51:37,931 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 [2021-11-25 17:51:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:37,933 INFO L225 Difference]: With dead ends: 1333 [2021-11-25 17:51:37,933 INFO L226 Difference]: Without dead ends: 1326 [2021-11-25 17:51:37,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:51:37,933 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 165 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:37,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 0 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:51:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-11-25 17:51:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 852. [2021-11-25 17:51:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 2.8942420681551115) internal successors, (2463), 851 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2021-11-25 17:54:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:20,657 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2360 transitions. [2021-11-25 17:54:20,657 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) [2021-11-25 17:54:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2360 transitions. [2021-11-25 17:54:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:20,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:20,658 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] [2021-11-25 17:54:20,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-11-25 17:54:20,659 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:20,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:20,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1896492842, now seen corresponding path program 61 times [2021-11-25 17:54:20,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:20,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25718432] [2021-11-25 17:54:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:20,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:20,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:20,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25718432] [2021-11-25 17:54:20,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25718432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:20,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:20,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:20,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363564717] [2021-11-25 17:54:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:20,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:20,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:20,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:20,952 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) [2021-11-25 17:54:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:21,350 INFO L93 Difference]: Finished difference Result 853 states and 2429 transitions. [2021-11-25 17:54:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:21,350 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 [2021-11-25 17:54:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:21,352 INFO L225 Difference]: With dead ends: 853 [2021-11-25 17:54:21,352 INFO L226 Difference]: Without dead ends: 842 [2021-11-25 17:54:21,352 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 [2021-11-25 17:54:21,352 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:21,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-25 17:54:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 822. [2021-11-25 17:54:21,362 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) [2021-11-25 17:54:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2363 transitions. [2021-11-25 17:54:21,363 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2363 transitions. Word has length 36 [2021-11-25 17:54:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:21,363 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 2363 transitions. [2021-11-25 17:54:21,364 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) [2021-11-25 17:54:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2363 transitions. [2021-11-25 17:54:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:21,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:21,365 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] [2021-11-25 17:54:21,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-11-25 17:54:21,365 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash 946042828, now seen corresponding path program 62 times [2021-11-25 17:54:21,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:21,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734902547] [2021-11-25 17:54:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:21,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:21,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734902547] [2021-11-25 17:54:21,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734902547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:21,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:21,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:21,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618109951] [2021-11-25 17:54:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:21,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:21,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:21,879 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) [2021-11-25 17:54:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:22,278 INFO L93 Difference]: Finished difference Result 851 states and 2423 transitions. [2021-11-25 17:54:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:22,279 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 [2021-11-25 17:54:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:22,280 INFO L225 Difference]: With dead ends: 851 [2021-11-25 17:54:22,280 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 17:54:22,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:22,281 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:22,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 17:54:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 820. [2021-11-25 17:54:22,289 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) [2021-11-25 17:54:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2358 transitions. [2021-11-25 17:54:22,290 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2358 transitions. Word has length 36 [2021-11-25 17:54:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:22,291 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2358 transitions. [2021-11-25 17:54:22,291 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) [2021-11-25 17:54:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2358 transitions. [2021-11-25 17:54:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:22,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:22,292 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] [2021-11-25 17:54:22,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-11-25 17:54:22,292 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -627024020, now seen corresponding path program 63 times [2021-11-25 17:54:22,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:22,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750083428] [2021-11-25 17:54:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:22,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:22,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:22,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750083428] [2021-11-25 17:54:22,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750083428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:22,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:22,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:54:22,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933839633] [2021-11-25 17:54:22,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:22,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:54:22,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:54:22,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:22,674 INFO L87 Difference]: Start difference. First operand 820 states and 2358 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) [2021-11-25 17:54:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:23,033 INFO L93 Difference]: Finished difference Result 867 states and 2444 transitions. [2021-11-25 17:54:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:54:23,033 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 [2021-11-25 17:54:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:23,034 INFO L225 Difference]: With dead ends: 867 [2021-11-25 17:54:23,035 INFO L226 Difference]: Without dead ends: 853 [2021-11-25 17:54:23,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:54:23,035 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:23,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-25 17:54:23,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 823. [2021-11-25 17:54:23,044 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) [2021-11-25 17:54:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2362 transitions. [2021-11-25 17:54:23,045 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2362 transitions. Word has length 36 [2021-11-25 17:54:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:23,045 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 2362 transitions. [2021-11-25 17:54:23,045 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) [2021-11-25 17:54:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2362 transitions. [2021-11-25 17:54:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:23,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:23,046 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] [2021-11-25 17:54:23,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-11-25 17:54:23,046 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:23,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:23,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1634560050, now seen corresponding path program 64 times [2021-11-25 17:54:23,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:23,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400575339] [2021-11-25 17:54:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:23,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 17:54:23,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:23,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400575339] [2021-11-25 17:54:23,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400575339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:23,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430992474] [2021-11-25 17:54:23,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 17:54:23,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:23,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:23,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:23,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 17:54:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:24,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 17:54:24,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:54:24,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:24,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 17:54:26,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 17:54:26,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 237 treesize of output 713 [2021-11-25 17:54:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:37,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:54:37,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430992474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:37,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:54:37,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2021-11-25 17:54:37,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434801007] [2021-11-25 17:54:37,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:37,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:37,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:37,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:54:37,368 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) [2021-11-25 17:54:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:37,587 INFO L93 Difference]: Finished difference Result 858 states and 2431 transitions. [2021-11-25 17:54:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:37,588 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 [2021-11-25 17:54:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:37,589 INFO L225 Difference]: With dead ends: 858 [2021-11-25 17:54:37,589 INFO L226 Difference]: Without dead ends: 847 [2021-11-25 17:54:37,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-11-25 17:54:37,589 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:37,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 0 Unknown, 216 Unchecked, 0.1s Time] [2021-11-25 17:54:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-25 17:54:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 825. [2021-11-25 17:54:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 2.866504854368932) internal successors, (2362), 824 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) [2021-11-25 17:54:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2362 transitions. [2021-11-25 17:54:37,601 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2362 transitions. Word has length 36 [2021-11-25 17:54:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:37,601 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 2362 transitions. [2021-11-25 17:54:37,601 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) [2021-11-25 17:54:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2362 transitions. [2021-11-25 17:54:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:37,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:37,602 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] [2021-11-25 17:54:37,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 17:54:37,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3276987e-56d2-4959-b01e-6e651c4f7776/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable209 [2021-11-25 17:54:37,803 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash 65657292, now seen corresponding path program 65 times [2021-11-25 17:54:37,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:37,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859800392] [2021-11-25 17:54:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:37,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:38,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:38,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859800392] [2021-11-25 17:54:38,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859800392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:38,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:38,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:38,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417889425] [2021-11-25 17:54:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:38,189 INFO L87 Difference]: Start difference. First operand 825 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) [2021-11-25 17:54:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:38,589 INFO L93 Difference]: Finished difference Result 856 states and 2425 transitions. [2021-11-25 17:54:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:38,589 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 [2021-11-25 17:54:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:38,591 INFO L225 Difference]: With dead ends: 856 [2021-11-25 17:54:38,591 INFO L226 Difference]: Without dead ends: 839 [2021-11-25 17:54:38,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:38,591 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:38,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-25 17:54:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 817. [2021-11-25 17:54:38,600 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) [2021-11-25 17:54:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2347 transitions. [2021-11-25 17:54:38,602 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2347 transitions. Word has length 36 [2021-11-25 17:54:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:38,602 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2347 transitions. [2021-11-25 17:54:38,602 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) [2021-11-25 17:54:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2347 transitions. [2021-11-25 17:54:38,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:38,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:38,603 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] [2021-11-25 17:54:38,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-11-25 17:54:38,603 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1259478664, now seen corresponding path program 66 times [2021-11-25 17:54:38,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:38,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317742162] [2021-11-25 17:54:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:38,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:38,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317742162] [2021-11-25 17:54:38,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317742162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:38,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:38,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:38,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96486554] [2021-11-25 17:54:38,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:38,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:38,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:38,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:38,874 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) [2021-11-25 17:54:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:39,375 INFO L93 Difference]: Finished difference Result 944 states and 2621 transitions. [2021-11-25 17:54:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:39,376 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 [2021-11-25 17:54:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:39,378 INFO L225 Difference]: With dead ends: 944 [2021-11-25 17:54:39,378 INFO L226 Difference]: Without dead ends: 933 [2021-11-25 17:54:39,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:39,378 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:39,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-25 17:54:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 852. [2021-11-25 17:54:39,392 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) [2021-11-25 17:54:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2444 transitions. [2021-11-25 17:54:39,394 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2444 transitions. Word has length 36 [2021-11-25 17:54:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:39,395 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2444 transitions. [2021-11-25 17:54:39,395 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) [2021-11-25 17:54:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2444 transitions. [2021-11-25 17:54:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:39,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:39,396 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] [2021-11-25 17:54:39,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-11-25 17:54:39,396 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1257694726, now seen corresponding path program 67 times [2021-11-25 17:54:39,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:39,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879927796] [2021-11-25 17:54:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:39,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:39,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:39,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879927796] [2021-11-25 17:54:39,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879927796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:39,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:39,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:39,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469788100] [2021-11-25 17:54:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:39,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:39,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:39,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:39,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:39,710 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) [2021-11-25 17:54:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:40,181 INFO L93 Difference]: Finished difference Result 956 states and 2630 transitions. [2021-11-25 17:54:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:40,182 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 [2021-11-25 17:54:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:40,183 INFO L225 Difference]: With dead ends: 956 [2021-11-25 17:54:40,183 INFO L226 Difference]: Without dead ends: 937 [2021-11-25 17:54:40,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:40,184 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:40,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-25 17:54:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 847. [2021-11-25 17:54:40,193 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) [2021-11-25 17:54:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2425 transitions. [2021-11-25 17:54:40,195 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2425 transitions. Word has length 36 [2021-11-25 17:54:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:40,195 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 2425 transitions. [2021-11-25 17:54:40,195 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) [2021-11-25 17:54:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2425 transitions. [2021-11-25 17:54:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:40,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:40,197 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] [2021-11-25 17:54:40,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-11-25 17:54:40,197 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 408050438, now seen corresponding path program 68 times [2021-11-25 17:54:40,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:40,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033814539] [2021-11-25 17:54:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:40,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:40,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:40,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033814539] [2021-11-25 17:54:40,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033814539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:40,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:40,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:40,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479182128] [2021-11-25 17:54:40,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:40,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:40,558 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) [2021-11-25 17:54:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:41,147 INFO L93 Difference]: Finished difference Result 987 states and 2683 transitions. [2021-11-25 17:54:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:41,148 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 [2021-11-25 17:54:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:41,149 INFO L225 Difference]: With dead ends: 987 [2021-11-25 17:54:41,149 INFO L226 Difference]: Without dead ends: 967 [2021-11-25 17:54:41,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:41,149 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:41,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-25 17:54:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 817. [2021-11-25 17:54:41,159 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) [2021-11-25 17:54:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2344 transitions. [2021-11-25 17:54:41,160 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2344 transitions. Word has length 36 [2021-11-25 17:54:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:41,161 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2344 transitions. [2021-11-25 17:54:41,161 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) [2021-11-25 17:54:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2344 transitions. [2021-11-25 17:54:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:41,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:41,162 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] [2021-11-25 17:54:41,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-11-25 17:54:41,162 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash 279817066, now seen corresponding path program 69 times [2021-11-25 17:54:41,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:41,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632281434] [2021-11-25 17:54:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:41,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:41,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:41,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632281434] [2021-11-25 17:54:41,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632281434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:41,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:41,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:41,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874364349] [2021-11-25 17:54:41,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:41,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:41,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:41,546 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) [2021-11-25 17:54:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:41,937 INFO L93 Difference]: Finished difference Result 860 states and 2436 transitions. [2021-11-25 17:54:41,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:41,938 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 [2021-11-25 17:54:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:41,939 INFO L225 Difference]: With dead ends: 860 [2021-11-25 17:54:41,939 INFO L226 Difference]: Without dead ends: 849 [2021-11-25 17:54:41,939 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 [2021-11-25 17:54:41,939 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 [2021-11-25 17:54:41,940 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] [2021-11-25 17:54:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-25 17:54:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 831. [2021-11-25 17:54:41,948 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) [2021-11-25 17:54:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2381 transitions. [2021-11-25 17:54:41,950 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2381 transitions. Word has length 36 [2021-11-25 17:54:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:41,950 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2381 transitions. [2021-11-25 17:54:41,950 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) [2021-11-25 17:54:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2381 transitions. [2021-11-25 17:54:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:41,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:41,951 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] [2021-11-25 17:54:41,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-11-25 17:54:41,951 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -670632948, now seen corresponding path program 70 times [2021-11-25 17:54:41,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124799771] [2021-11-25 17:54:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:41,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:42,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:42,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124799771] [2021-11-25 17:54:42,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124799771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:42,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:42,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:42,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142712404] [2021-11-25 17:54:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:42,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:42,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:42,401 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) [2021-11-25 17:54:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:42,857 INFO L93 Difference]: Finished difference Result 858 states and 2430 transitions. [2021-11-25 17:54:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:42,858 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 [2021-11-25 17:54:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:42,859 INFO L225 Difference]: With dead ends: 858 [2021-11-25 17:54:42,859 INFO L226 Difference]: Without dead ends: 847 [2021-11-25 17:54:42,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:42,860 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:42,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-25 17:54:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 829. [2021-11-25 17:54:42,869 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) [2021-11-25 17:54:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 2374 transitions. [2021-11-25 17:54:42,870 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 2374 transitions. Word has length 36 [2021-11-25 17:54:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:42,870 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 2374 transitions. [2021-11-25 17:54:42,871 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) [2021-11-25 17:54:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 2374 transitions. [2021-11-25 17:54:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:42,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:42,872 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] [2021-11-25 17:54:42,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-11-25 17:54:42,872 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2000750606, now seen corresponding path program 71 times [2021-11-25 17:54:42,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:42,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792744524] [2021-11-25 17:54:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:42,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:43,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792744524] [2021-11-25 17:54:43,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792744524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:43,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:43,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:54:43,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542340537] [2021-11-25 17:54:43,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:43,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:54:43,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:54:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:54:43,404 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) [2021-11-25 17:54:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:43,946 INFO L93 Difference]: Finished difference Result 910 states and 2519 transitions. [2021-11-25 17:54:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:43,947 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 [2021-11-25 17:54:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:43,948 INFO L225 Difference]: With dead ends: 910 [2021-11-25 17:54:43,948 INFO L226 Difference]: Without dead ends: 890 [2021-11-25 17:54:43,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:54:43,948 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:43,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:43,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-25 17:54:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 799. [2021-11-25 17:54:43,962 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) [2021-11-25 17:54:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 2286 transitions. [2021-11-25 17:54:43,964 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 2286 transitions. Word has length 36 [2021-11-25 17:54:43,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:43,965 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 2286 transitions. [2021-11-25 17:54:43,965 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) [2021-11-25 17:54:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 2286 transitions. [2021-11-25 17:54:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:43,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:43,967 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] [2021-11-25 17:54:43,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-11-25 17:54:43,967 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1081654584, now seen corresponding path program 72 times [2021-11-25 17:54:43,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:43,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609078498] [2021-11-25 17:54:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:43,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:44,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:44,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609078498] [2021-11-25 17:54:44,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609078498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:44,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:44,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:54:44,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366939859] [2021-11-25 17:54:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:44,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:54:44,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:44,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:54:44,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:44,242 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) [2021-11-25 17:54:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:44,728 INFO L93 Difference]: Finished difference Result 920 states and 2544 transitions. [2021-11-25 17:54:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:44,728 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 [2021-11-25 17:54:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:44,730 INFO L225 Difference]: With dead ends: 920 [2021-11-25 17:54:44,730 INFO L226 Difference]: Without dead ends: 909 [2021-11-25 17:54:44,730 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 [2021-11-25 17:54:44,730 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:44,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-11-25 17:54:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 816. [2021-11-25 17:54:44,739 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) [2021-11-25 17:54:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 2319 transitions. [2021-11-25 17:54:44,741 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 2319 transitions. Word has length 36 [2021-11-25 17:54:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:44,741 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 2319 transitions. [2021-11-25 17:54:44,741 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) [2021-11-25 17:54:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2319 transitions. [2021-11-25 17:54:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:44,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:44,742 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] [2021-11-25 17:54:44,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-11-25 17:54:44,742 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1083438522, now seen corresponding path program 73 times [2021-11-25 17:54:44,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:44,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955688836] [2021-11-25 17:54:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:44,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:45,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:45,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955688836] [2021-11-25 17:54:45,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955688836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:45,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:45,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:54:45,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516593108] [2021-11-25 17:54:45,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:45,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:54:45,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:45,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:54:45,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:45,084 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) [2021-11-25 17:54:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:45,602 INFO L93 Difference]: Finished difference Result 924 states and 2546 transitions. [2021-11-25 17:54:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:54:45,603 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 [2021-11-25 17:54:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:45,604 INFO L225 Difference]: With dead ends: 924 [2021-11-25 17:54:45,604 INFO L226 Difference]: Without dead ends: 905 [2021-11-25 17:54:45,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:54:45,604 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 111 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:45,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-25 17:54:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 811. [2021-11-25 17:54:45,614 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) [2021-11-25 17:54:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 2309 transitions. [2021-11-25 17:54:45,615 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 2309 transitions. Word has length 36 [2021-11-25 17:54:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:45,615 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 2309 transitions. [2021-11-25 17:54:45,615 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) [2021-11-25 17:54:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 2309 transitions. [2021-11-25 17:54:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:45,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:45,616 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] [2021-11-25 17:54:45,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-11-25 17:54:45,617 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash -629479858, now seen corresponding path program 74 times [2021-11-25 17:54:45,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:45,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230569459] [2021-11-25 17:54:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:45,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:45,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:45,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230569459] [2021-11-25 17:54:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230569459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:45,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:45,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:54:45,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551180719] [2021-11-25 17:54:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:45,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:54:45,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:54:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:54:45,916 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) [2021-11-25 17:54:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:46,458 INFO L93 Difference]: Finished difference Result 919 states and 2536 transitions. [2021-11-25 17:54:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:54:46,458 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 [2021-11-25 17:54:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:46,459 INFO L225 Difference]: With dead ends: 919 [2021-11-25 17:54:46,459 INFO L226 Difference]: Without dead ends: 903 [2021-11-25 17:54:46,460 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 [2021-11-25 17:54:46,460 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:46,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:54:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-11-25 17:54:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 810. [2021-11-25 17:54:46,468 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) [2021-11-25 17:54:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2306 transitions. [2021-11-25 17:54:46,470 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2306 transitions. Word has length 36 [2021-11-25 17:54:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:46,470 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 2306 transitions. [2021-11-25 17:54:46,470 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) [2021-11-25 17:54:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2306 transitions. [2021-11-25 17:54:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:46,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:46,471 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] [2021-11-25 17:54:46,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-11-25 17:54:46,471 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1858769710, now seen corresponding path program 75 times [2021-11-25 17:54:46,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:46,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706058127] [2021-11-25 17:54:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:46,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:46,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706058127] [2021-11-25 17:54:46,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706058127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:46,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:46,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:54:46,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110811356] [2021-11-25 17:54:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:46,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:54:46,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:54:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:46,783 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) [2021-11-25 17:54:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:47,250 INFO L93 Difference]: Finished difference Result 907 states and 2510 transitions. [2021-11-25 17:54:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:54:47,250 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 [2021-11-25 17:54:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:47,252 INFO L225 Difference]: With dead ends: 907 [2021-11-25 17:54:47,252 INFO L226 Difference]: Without dead ends: 896 [2021-11-25 17:54:47,252 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 [2021-11-25 17:54:47,252 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:47,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:47,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-11-25 17:54:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 845. [2021-11-25 17:54:47,262 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) [2021-11-25 17:54:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2403 transitions. [2021-11-25 17:54:47,263 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2403 transitions. Word has length 36 [2021-11-25 17:54:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:47,263 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 2403 transitions. [2021-11-25 17:54:47,263 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) [2021-11-25 17:54:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2403 transitions. [2021-11-25 17:54:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:47,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:47,264 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] [2021-11-25 17:54:47,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-11-25 17:54:47,264 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:47,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1856985772, now seen corresponding path program 76 times [2021-11-25 17:54:47,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:47,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736086619] [2021-11-25 17:54:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:47,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:47,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:47,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736086619] [2021-11-25 17:54:47,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736086619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:47,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:47,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:54:47,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277818154] [2021-11-25 17:54:47,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:47,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:54:47,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:54:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:47,767 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) [2021-11-25 17:54:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:48,210 INFO L93 Difference]: Finished difference Result 918 states and 2518 transitions. [2021-11-25 17:54:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:54:48,211 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 [2021-11-25 17:54:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:48,212 INFO L225 Difference]: With dead ends: 918 [2021-11-25 17:54:48,212 INFO L226 Difference]: Without dead ends: 899 [2021-11-25 17:54:48,212 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 [2021-11-25 17:54:48,212 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:48,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:48,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-25 17:54:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 840. [2021-11-25 17:54:48,222 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) [2021-11-25 17:54:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2384 transitions. [2021-11-25 17:54:48,223 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2384 transitions. Word has length 36 [2021-11-25 17:54:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:48,224 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 2384 transitions. [2021-11-25 17:54:48,224 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) [2021-11-25 17:54:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2384 transitions. [2021-11-25 17:54:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:48,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:48,225 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] [2021-11-25 17:54:48,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-11-25 17:54:48,225 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash -191240608, now seen corresponding path program 77 times [2021-11-25 17:54:48,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:48,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718333788] [2021-11-25 17:54:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:48,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:48,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:48,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718333788] [2021-11-25 17:54:48,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718333788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:48,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:48,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:54:48,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679273972] [2021-11-25 17:54:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:48,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:54:48,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:54:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:48,550 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) [2021-11-25 17:54:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:49,065 INFO L93 Difference]: Finished difference Result 926 states and 2522 transitions. [2021-11-25 17:54:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:54:49,066 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 [2021-11-25 17:54:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:49,067 INFO L225 Difference]: With dead ends: 926 [2021-11-25 17:54:49,067 INFO L226 Difference]: Without dead ends: 900 [2021-11-25 17:54:49,067 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 [2021-11-25 17:54:49,068 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:49,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:54:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-11-25 17:54:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 796. [2021-11-25 17:54:49,077 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) [2021-11-25 17:54:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2270 transitions. [2021-11-25 17:54:49,078 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2270 transitions. Word has length 36 [2021-11-25 17:54:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:49,079 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2270 transitions. [2021-11-25 17:54:49,079 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) [2021-11-25 17:54:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2270 transitions. [2021-11-25 17:54:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:49,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:49,080 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] [2021-11-25 17:54:49,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-11-25 17:54:49,080 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash -711665104, now seen corresponding path program 5 times [2021-11-25 17:54:49,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:49,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598798440] [2021-11-25 17:54:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:49,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:49,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:49,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598798440] [2021-11-25 17:54:49,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598798440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:49,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:49,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:54:49,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531807448] [2021-11-25 17:54:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:49,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:54:49,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:49,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:54:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:54:49,184 INFO L87 Difference]: Start difference. First operand 796 states and 2270 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:49,342 INFO L93 Difference]: Finished difference Result 1111 states and 3087 transitions. [2021-11-25 17:54:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:54:49,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have 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 [2021-11-25 17:54:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:49,344 INFO L225 Difference]: With dead ends: 1111 [2021-11-25 17:54:49,344 INFO L226 Difference]: Without dead ends: 1111 [2021-11-25 17:54:49,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:49,345 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:49,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:54:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-25 17:54:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 797. [2021-11-25 17:54:49,355 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) [2021-11-25 17:54:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2266 transitions. [2021-11-25 17:54:49,356 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2266 transitions. Word has length 36 [2021-11-25 17:54:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:49,357 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 2266 transitions. [2021-11-25 17:54:49,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2266 transitions. [2021-11-25 17:54:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:49,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:49,358 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] [2021-11-25 17:54:49,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-11-25 17:54:49,358 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1802330948, now seen corresponding path program 6 times [2021-11-25 17:54:49,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:49,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033937048] [2021-11-25 17:54:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:49,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:49,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:49,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033937048] [2021-11-25 17:54:49,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033937048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:49,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:49,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:54:49,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892434141] [2021-11-25 17:54:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:49,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:54:49,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:54:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:54:49,468 INFO L87 Difference]: Start difference. First operand 797 states and 2266 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:49,648 INFO L93 Difference]: Finished difference Result 935 states and 2608 transitions. [2021-11-25 17:54:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:54:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have 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 [2021-11-25 17:54:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:49,650 INFO L225 Difference]: With dead ends: 935 [2021-11-25 17:54:49,650 INFO L226 Difference]: Without dead ends: 920 [2021-11-25 17:54:49,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:54:49,651 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:49,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:54:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-25 17:54:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 777. [2021-11-25 17:54:49,660 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) [2021-11-25 17:54:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2196 transitions. [2021-11-25 17:54:49,662 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2196 transitions. Word has length 36 [2021-11-25 17:54:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:49,662 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 2196 transitions. [2021-11-25 17:54:49,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2196 transitions. [2021-11-25 17:54:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:49,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:49,663 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] [2021-11-25 17:54:49,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-11-25 17:54:49,663 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1183595392, now seen corresponding path program 6 times [2021-11-25 17:54:49,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:49,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347012987] [2021-11-25 17:54:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:49,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:49,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:49,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347012987] [2021-11-25 17:54:49,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347012987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:49,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:49,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:54:49,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649230259] [2021-11-25 17:54:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:49,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:54:49,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:54:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:54:49,779 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) [2021-11-25 17:54:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:49,968 INFO L93 Difference]: Finished difference Result 927 states and 2534 transitions. [2021-11-25 17:54:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:54:49,968 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 [2021-11-25 17:54:49,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:49,969 INFO L225 Difference]: With dead ends: 927 [2021-11-25 17:54:49,970 INFO L226 Difference]: Without dead ends: 839 [2021-11-25 17:54:49,970 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 [2021-11-25 17:54:49,970 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:49,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:54:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-25 17:54:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 765. [2021-11-25 17:54:49,979 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) [2021-11-25 17:54:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 2165 transitions. [2021-11-25 17:54:49,980 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 2165 transitions. Word has length 36 [2021-11-25 17:54:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:49,980 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 2165 transitions. [2021-11-25 17:54:49,981 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) [2021-11-25 17:54:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 2165 transitions. [2021-11-25 17:54:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:49,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:49,982 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] [2021-11-25 17:54:49,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-11-25 17:54:49,982 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1110019162, now seen corresponding path program 130 times [2021-11-25 17:54:49,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:49,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309229704] [2021-11-25 17:54:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:49,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:50,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:50,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309229704] [2021-11-25 17:54:50,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309229704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:50,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:50,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:54:50,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134021504] [2021-11-25 17:54:50,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:50,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:54:50,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:54:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:54:50,336 INFO L87 Difference]: Start difference. First operand 765 states and 2165 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) [2021-11-25 17:54:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:51,504 INFO L93 Difference]: Finished difference Result 2104 states and 5632 transitions. [2021-11-25 17:54:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:54:51,504 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 [2021-11-25 17:54:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:51,507 INFO L225 Difference]: With dead ends: 2104 [2021-11-25 17:54:51,507 INFO L226 Difference]: Without dead ends: 2097 [2021-11-25 17:54:51,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:54:51,508 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 309 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:51,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 0 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:54:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-11-25 17:54:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 783. [2021-11-25 17:54:51,526 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) [2021-11-25 17:54:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 2223 transitions. [2021-11-25 17:54:51,527 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 2223 transitions. Word has length 36 [2021-11-25 17:54:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:51,527 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 2223 transitions. [2021-11-25 17:54:51,527 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) [2021-11-25 17:54:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 2223 transitions. [2021-11-25 17:54:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:51,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:51,529 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] [2021-11-25 17:54:51,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-11-25 17:54:51,529 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1092096684, now seen corresponding path program 131 times [2021-11-25 17:54:51,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:51,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922895992] [2021-11-25 17:54:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:51,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:52,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:52,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922895992] [2021-11-25 17:54:52,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922895992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:52,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:52,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:54:52,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630193079] [2021-11-25 17:54:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:52,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:54:52,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:54:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:54:52,040 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) [2021-11-25 17:54:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:53,315 INFO L93 Difference]: Finished difference Result 2178 states and 5818 transitions. [2021-11-25 17:54:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:54:53,316 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 [2021-11-25 17:54:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:53,318 INFO L225 Difference]: With dead ends: 2178 [2021-11-25 17:54:53,319 INFO L226 Difference]: Without dead ends: 2171 [2021-11-25 17:54:53,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:54:53,319 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:53,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:54:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-11-25 17:54:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 798. [2021-11-25 17:54:53,349 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) [2021-11-25 17:54:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2267 transitions. [2021-11-25 17:54:53,351 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2267 transitions. Word has length 36 [2021-11-25 17:54:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:53,352 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2267 transitions. [2021-11-25 17:54:53,352 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) [2021-11-25 17:54:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2267 transitions. [2021-11-25 17:54:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:53,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:53,353 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] [2021-11-25 17:54:53,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-11-25 17:54:53,354 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:53,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash 204826242, now seen corresponding path program 132 times [2021-11-25 17:54:53,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:53,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379908518] [2021-11-25 17:54:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:53,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:53,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:53,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379908518] [2021-11-25 17:54:53,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379908518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:53,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:53,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:54:53,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298099575] [2021-11-25 17:54:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:53,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:54:53,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:54:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:54:53,872 INFO L87 Difference]: Start difference. First operand 798 states and 2267 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) [2021-11-25 17:54:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:55,803 INFO L93 Difference]: Finished difference Result 2142 states and 5750 transitions. [2021-11-25 17:54:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:54:55,804 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 [2021-11-25 17:54:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:55,807 INFO L225 Difference]: With dead ends: 2142 [2021-11-25 17:54:55,807 INFO L226 Difference]: Without dead ends: 2128 [2021-11-25 17:54:55,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=385, Invalid=875, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 17:54:55,807 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 391 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:55,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 0 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:54:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-25 17:54:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 778. [2021-11-25 17:54:55,826 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) [2021-11-25 17:54:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2210 transitions. [2021-11-25 17:54:55,827 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2210 transitions. Word has length 36 [2021-11-25 17:54:55,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:55,827 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2210 transitions. [2021-11-25 17:54:55,827 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) [2021-11-25 17:54:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2210 transitions. [2021-11-25 17:54:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:55,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:55,828 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] [2021-11-25 17:54:55,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-11-25 17:54:55,829 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:55,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1878450682, now seen corresponding path program 133 times [2021-11-25 17:54:55,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:55,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147058851] [2021-11-25 17:54:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:55,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:56,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:56,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147058851] [2021-11-25 17:54:56,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147058851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:56,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:56,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:54:56,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218717898] [2021-11-25 17:54:56,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:56,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:54:56,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:54:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:54:56,405 INFO L87 Difference]: Start difference. First operand 778 states and 2210 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) [2021-11-25 17:54:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:59,408 INFO L93 Difference]: Finished difference Result 2310 states and 6096 transitions. [2021-11-25 17:54:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 17:54:59,409 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 [2021-11-25 17:54:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:59,412 INFO L225 Difference]: With dead ends: 2310 [2021-11-25 17:54:59,412 INFO L226 Difference]: Without dead ends: 2303 [2021-11-25 17:54:59,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=681, Invalid=1575, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 17:54:59,412 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 393 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:59,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 0 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:54:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2021-11-25 17:54:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 796. [2021-11-25 17:54:59,431 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) [2021-11-25 17:54:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2261 transitions. [2021-11-25 17:54:59,432 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2261 transitions. Word has length 36 [2021-11-25 17:54:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:59,432 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2261 transitions. [2021-11-25 17:54:59,432 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) [2021-11-25 17:54:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2261 transitions. [2021-11-25 17:54:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:54:59,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:59,433 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] [2021-11-25 17:54:59,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-11-25 17:54:59,434 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:54:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1119593688, now seen corresponding path program 134 times [2021-11-25 17:54:59,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:59,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180450641] [2021-11-25 17:54:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:59,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:54:59,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:59,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180450641] [2021-11-25 17:54:59,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180450641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:59,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:59,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:54:59,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717381010] [2021-11-25 17:54:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:59,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:54:59,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:54:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:54:59,964 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) [2021-11-25 17:55:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:01,858 INFO L93 Difference]: Finished difference Result 2155 states and 5782 transitions. [2021-11-25 17:55:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:01,859 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 [2021-11-25 17:55:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:01,862 INFO L225 Difference]: With dead ends: 2155 [2021-11-25 17:55:01,862 INFO L226 Difference]: Without dead ends: 2141 [2021-11-25 17:55:01,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=383, Invalid=877, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 17:55:01,862 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 426 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:01,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 0 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:55:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2021-11-25 17:55:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 786. [2021-11-25 17:55:01,879 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) [2021-11-25 17:55:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2235 transitions. [2021-11-25 17:55:01,880 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2235 transitions. Word has length 36 [2021-11-25 17:55:01,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:01,880 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 2235 transitions. [2021-11-25 17:55:01,881 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) [2021-11-25 17:55:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2235 transitions. [2021-11-25 17:55:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:01,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:01,882 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] [2021-11-25 17:55:01,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-11-25 17:55:01,882 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:01,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:01,882 INFO L85 PathProgramCache]: Analyzing trace with hash 253952386, now seen corresponding path program 135 times [2021-11-25 17:55:01,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:01,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677306564] [2021-11-25 17:55:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:01,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:02,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:02,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677306564] [2021-11-25 17:55:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677306564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:02,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:02,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-25 17:55:02,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218963014] [2021-11-25 17:55:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:02,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 17:55:02,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:02,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 17:55:02,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:55:02,650 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) [2021-11-25 17:55:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:04,962 INFO L93 Difference]: Finished difference Result 2127 states and 5711 transitions. [2021-11-25 17:55:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:04,963 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 [2021-11-25 17:55:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:04,966 INFO L225 Difference]: With dead ends: 2127 [2021-11-25 17:55:04,966 INFO L226 Difference]: Without dead ends: 2112 [2021-11-25 17:55:04,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 17:55:04,967 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 454 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:04,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 0 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:55:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-11-25 17:55:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 778. [2021-11-25 17:55:04,995 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) [2021-11-25 17:55:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2210 transitions. [2021-11-25 17:55:04,997 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2210 transitions. Word has length 36 [2021-11-25 17:55:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:04,998 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2210 transitions. [2021-11-25 17:55:04,998 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) [2021-11-25 17:55:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2210 transitions. [2021-11-25 17:55:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:04,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:05,000 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] [2021-11-25 17:55:05,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-11-25 17:55:05,000 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2109137798, now seen corresponding path program 136 times [2021-11-25 17:55:05,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:05,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801194010] [2021-11-25 17:55:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:05,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:05,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801194010] [2021-11-25 17:55:05,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801194010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:05,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:05,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:05,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069388315] [2021-11-25 17:55:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:05,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:05,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:05,339 INFO L87 Difference]: Start difference. First operand 778 states and 2210 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) [2021-11-25 17:55:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:06,586 INFO L93 Difference]: Finished difference Result 2292 states and 6066 transitions. [2021-11-25 17:55:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:06,587 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 [2021-11-25 17:55:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:06,590 INFO L225 Difference]: With dead ends: 2292 [2021-11-25 17:55:06,590 INFO L226 Difference]: Without dead ends: 2285 [2021-11-25 17:55:06,590 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 [2021-11-25 17:55:06,590 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:06,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-11-25 17:55:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 784. [2021-11-25 17:55:06,606 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) [2021-11-25 17:55:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2227 transitions. [2021-11-25 17:55:06,608 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2227 transitions. Word has length 36 [2021-11-25 17:55:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:06,608 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2227 transitions. [2021-11-25 17:55:06,608 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) [2021-11-25 17:55:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2227 transitions. [2021-11-25 17:55:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:06,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:06,609 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] [2021-11-25 17:55:06,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-11-25 17:55:06,609 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash 278114922, now seen corresponding path program 137 times [2021-11-25 17:55:06,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:06,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40211445] [2021-11-25 17:55:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:06,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:07,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40211445] [2021-11-25 17:55:07,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40211445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:07,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:07,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:07,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407530046] [2021-11-25 17:55:07,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:07,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:07,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:07,012 INFO L87 Difference]: Start difference. First operand 784 states and 2227 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) [2021-11-25 17:55:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:08,112 INFO L93 Difference]: Finished difference Result 2404 states and 6346 transitions. [2021-11-25 17:55:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:08,113 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 [2021-11-25 17:55:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:08,116 INFO L225 Difference]: With dead ends: 2404 [2021-11-25 17:55:08,116 INFO L226 Difference]: Without dead ends: 2397 [2021-11-25 17:55:08,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:55:08,116 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 305 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:08,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 0 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-11-25 17:55:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 802. [2021-11-25 17:55:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 2.8514357053682895) internal successors, (2284), 801 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2284 transitions. [2021-11-25 17:55:08,135 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2284 transitions. Word has length 36 [2021-11-25 17:55:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:08,135 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2284 transitions. [2021-11-25 17:55:08,135 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) [2021-11-25 17:55:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2284 transitions. [2021-11-25 17:55:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:08,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:08,136 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] [2021-11-25 17:55:08,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-11-25 17:55:08,137 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:08,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1715609478, now seen corresponding path program 138 times [2021-11-25 17:55:08,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:08,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752475932] [2021-11-25 17:55:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:08,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:08,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:08,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752475932] [2021-11-25 17:55:08,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752475932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:08,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:08,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 17:55:08,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824484150] [2021-11-25 17:55:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:08,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 17:55:08,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 17:55:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:55:08,643 INFO L87 Difference]: Start difference. First operand 802 states and 2284 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) [2021-11-25 17:55:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:12,952 INFO L93 Difference]: Finished difference Result 2360 states and 6361 transitions. [2021-11-25 17:55:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 17:55:12,952 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 [2021-11-25 17:55:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:12,955 INFO L225 Difference]: With dead ends: 2360 [2021-11-25 17:55:12,955 INFO L226 Difference]: Without dead ends: 2353 [2021-11-25 17:55:12,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=716, Invalid=1734, Unknown=0, NotChecked=0, Total=2450 [2021-11-25 17:55:12,956 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 414 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:12,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 0 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:55:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-25 17:55:12,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 802. [2021-11-25 17:55:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 2.8514357053682895) internal successors, (2284), 801 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2284 transitions. [2021-11-25 17:55:12,975 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2284 transitions. Word has length 36 [2021-11-25 17:55:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:12,975 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2284 transitions. [2021-11-25 17:55:12,975 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) [2021-11-25 17:55:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2284 transitions. [2021-11-25 17:55:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:12,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:12,976 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] [2021-11-25 17:55:12,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-11-25 17:55:12,976 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:12,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash 35613888, now seen corresponding path program 139 times [2021-11-25 17:55:12,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:12,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667667223] [2021-11-25 17:55:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:12,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:13,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:13,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667667223] [2021-11-25 17:55:13,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667667223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:13,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:13,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:13,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266717269] [2021-11-25 17:55:13,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:13,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:13,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:13,405 INFO L87 Difference]: Start difference. First operand 802 states and 2284 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) [2021-11-25 17:55:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:14,554 INFO L93 Difference]: Finished difference Result 2658 states and 7158 transitions. [2021-11-25 17:55:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:14,554 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 [2021-11-25 17:55:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:14,558 INFO L225 Difference]: With dead ends: 2658 [2021-11-25 17:55:14,558 INFO L226 Difference]: Without dead ends: 2651 [2021-11-25 17:55:14,558 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 [2021-11-25 17:55:14,558 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 308 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:14,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 0 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-11-25 17:55:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 844. [2021-11-25 17:55:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.889679715302491) internal successors, (2436), 843 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2436 transitions. [2021-11-25 17:55:14,580 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2436 transitions. Word has length 36 [2021-11-25 17:55:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:14,580 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2436 transitions. [2021-11-25 17:55:14,580 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) [2021-11-25 17:55:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2436 transitions. [2021-11-25 17:55:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:14,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:14,581 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] [2021-11-25 17:55:14,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-11-25 17:55:14,581 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1332536814, now seen corresponding path program 140 times [2021-11-25 17:55:14,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:14,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131715937] [2021-11-25 17:55:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:14,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:15,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:15,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131715937] [2021-11-25 17:55:15,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131715937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:15,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 17:55:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980555650] [2021-11-25 17:55:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:15,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 17:55:15,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 17:55:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:55:15,045 INFO L87 Difference]: Start difference. First operand 844 states and 2436 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) [2021-11-25 17:55:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:17,081 INFO L93 Difference]: Finished difference Result 2507 states and 6769 transitions. [2021-11-25 17:55:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:17,082 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 [2021-11-25 17:55:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:17,085 INFO L225 Difference]: With dead ends: 2507 [2021-11-25 17:55:17,085 INFO L226 Difference]: Without dead ends: 2493 [2021-11-25 17:55:17,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=368, Invalid=822, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:55:17,086 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:17,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:55:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-11-25 17:55:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 850. [2021-11-25 17:55:17,106 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) [2021-11-25 17:55:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2462 transitions. [2021-11-25 17:55:17,108 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2462 transitions. Word has length 36 [2021-11-25 17:55:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:17,108 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2462 transitions. [2021-11-25 17:55:17,108 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) [2021-11-25 17:55:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2462 transitions. [2021-11-25 17:55:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:17,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:17,109 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] [2021-11-25 17:55:17,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-11-25 17:55:17,109 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1555994816, now seen corresponding path program 141 times [2021-11-25 17:55:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:17,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166038440] [2021-11-25 17:55:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:17,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:17,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:17,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166038440] [2021-11-25 17:55:17,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166038440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:17,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:17,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:17,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528436601] [2021-11-25 17:55:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:17,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:17,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:17,439 INFO L87 Difference]: Start difference. First operand 850 states and 2462 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) [2021-11-25 17:55:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:18,532 INFO L93 Difference]: Finished difference Result 2702 states and 7272 transitions. [2021-11-25 17:55:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:18,533 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 [2021-11-25 17:55:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:18,536 INFO L225 Difference]: With dead ends: 2702 [2021-11-25 17:55:18,537 INFO L226 Difference]: Without dead ends: 2695 [2021-11-25 17:55:18,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:55:18,537 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 306 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:18,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 0 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-11-25 17:55:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 850. [2021-11-25 17:55:18,557 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) [2021-11-25 17:55:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2462 transitions. [2021-11-25 17:55:18,559 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2462 transitions. Word has length 36 [2021-11-25 17:55:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:18,559 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2462 transitions. [2021-11-25 17:55:18,559 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) [2021-11-25 17:55:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2462 transitions. [2021-11-25 17:55:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:18,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:18,560 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] [2021-11-25 17:55:18,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-11-25 17:55:18,560 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1393808896, now seen corresponding path program 142 times [2021-11-25 17:55:18,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:18,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401297981] [2021-11-25 17:55:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:18,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:18,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401297981] [2021-11-25 17:55:18,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401297981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:18,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:18,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:18,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407422209] [2021-11-25 17:55:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:18,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:18,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:18,950 INFO L87 Difference]: Start difference. First operand 850 states and 2462 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) [2021-11-25 17:55:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:19,943 INFO L93 Difference]: Finished difference Result 2680 states and 7226 transitions. [2021-11-25 17:55:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:19,943 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 [2021-11-25 17:55:19,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:19,947 INFO L225 Difference]: With dead ends: 2680 [2021-11-25 17:55:19,947 INFO L226 Difference]: Without dead ends: 2673 [2021-11-25 17:55:19,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:55:19,948 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 313 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 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, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:19,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2021-11-25 17:55:19,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 850. [2021-11-25 17:55:19,970 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) [2021-11-25 17:55:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2462 transitions. [2021-11-25 17:55:19,971 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2462 transitions. Word has length 36 [2021-11-25 17:55:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:19,972 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2462 transitions. [2021-11-25 17:55:19,972 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) [2021-11-25 17:55:19,972 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2462 transitions. [2021-11-25 17:55:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:19,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:19,973 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] [2021-11-25 17:55:19,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-11-25 17:55:19,973 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:19,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1349772206, now seen corresponding path program 143 times [2021-11-25 17:55:19,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:19,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21956100] [2021-11-25 17:55:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:19,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:20,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21956100] [2021-11-25 17:55:20,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21956100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:20,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:20,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:20,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655916636] [2021-11-25 17:55:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:20,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:20,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:20,302 INFO L87 Difference]: Start difference. First operand 850 states and 2462 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) [2021-11-25 17:55:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:21,319 INFO L93 Difference]: Finished difference Result 2513 states and 6847 transitions. [2021-11-25 17:55:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:21,319 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 [2021-11-25 17:55:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:21,323 INFO L225 Difference]: With dead ends: 2513 [2021-11-25 17:55:21,324 INFO L226 Difference]: Without dead ends: 2499 [2021-11-25 17:55:21,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:55:21,324 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 325 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:21,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 0 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:21,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-11-25 17:55:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 859. [2021-11-25 17:55:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 2.893939393939394) internal successors, (2483), 858 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 2483 transitions. [2021-11-25 17:55:21,348 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 2483 transitions. Word has length 36 [2021-11-25 17:55:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:21,349 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 2483 transitions. [2021-11-25 17:55:21,349 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) [2021-11-25 17:55:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 2483 transitions. [2021-11-25 17:55:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:21,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:21,350 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] [2021-11-25 17:55:21,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-11-25 17:55:21,350 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash -591392850, now seen corresponding path program 144 times [2021-11-25 17:55:21,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:21,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335194100] [2021-11-25 17:55:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:21,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:21,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:21,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335194100] [2021-11-25 17:55:21,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335194100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:21,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:21,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:21,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717371543] [2021-11-25 17:55:21,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:21,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:21,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:21,699 INFO L87 Difference]: Start difference. First operand 859 states and 2483 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) [2021-11-25 17:55:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:22,882 INFO L93 Difference]: Finished difference Result 2527 states and 6866 transitions. [2021-11-25 17:55:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:22,883 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 [2021-11-25 17:55:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:22,887 INFO L225 Difference]: With dead ends: 2527 [2021-11-25 17:55:22,887 INFO L226 Difference]: Without dead ends: 2520 [2021-11-25 17:55:22,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:55:22,887 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 341 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:22,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 0 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:55:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2021-11-25 17:55:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 850. [2021-11-25 17:55:22,915 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) [2021-11-25 17:55:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2462 transitions. [2021-11-25 17:55:22,917 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2462 transitions. Word has length 36 [2021-11-25 17:55:22,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:22,917 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2462 transitions. [2021-11-25 17:55:22,917 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) [2021-11-25 17:55:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2462 transitions. [2021-11-25 17:55:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:22,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:22,919 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] [2021-11-25 17:55:22,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-11-25 17:55:22,919 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash -85326632, now seen corresponding path program 145 times [2021-11-25 17:55:22,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:22,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089301017] [2021-11-25 17:55:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:22,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:23,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:23,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089301017] [2021-11-25 17:55:23,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089301017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:23,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:23,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 17:55:23,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628260492] [2021-11-25 17:55:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:23,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 17:55:23,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:23,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 17:55:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:55:23,450 INFO L87 Difference]: Start difference. First operand 850 states and 2462 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) [2021-11-25 17:55:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:25,481 INFO L93 Difference]: Finished difference Result 2369 states and 6446 transitions. [2021-11-25 17:55:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:25,481 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 [2021-11-25 17:55:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:25,485 INFO L225 Difference]: With dead ends: 2369 [2021-11-25 17:55:25,485 INFO L226 Difference]: Without dead ends: 2355 [2021-11-25 17:55:25,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=366, Invalid=824, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:55:25,485 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 457 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:25,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 0 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:55:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-25 17:55:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 841. [2021-11-25 17:55:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 2.8845238095238095) internal successors, (2423), 840 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2423 transitions. [2021-11-25 17:55:25,508 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2423 transitions. Word has length 36 [2021-11-25 17:55:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:25,508 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 2423 transitions. [2021-11-25 17:55:25,508 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) [2021-11-25 17:55:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2423 transitions. [2021-11-25 17:55:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:25,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:25,509 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] [2021-11-25 17:55:25,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-11-25 17:55:25,510 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1028004506, now seen corresponding path program 146 times [2021-11-25 17:55:25,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:25,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396915601] [2021-11-25 17:55:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:25,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:25,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:25,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396915601] [2021-11-25 17:55:25,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396915601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:25,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:25,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:25,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750644814] [2021-11-25 17:55:25,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:25,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:25,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:25,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:25,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:25,912 INFO L87 Difference]: Start difference. First operand 841 states and 2423 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) [2021-11-25 17:55:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:27,140 INFO L93 Difference]: Finished difference Result 2697 states and 7297 transitions. [2021-11-25 17:55:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:27,141 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 [2021-11-25 17:55:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:27,145 INFO L225 Difference]: With dead ends: 2697 [2021-11-25 17:55:27,145 INFO L226 Difference]: Without dead ends: 2690 [2021-11-25 17:55:27,145 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 [2021-11-25 17:55:27,145 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 321 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:27,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 0 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-11-25 17:55:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 880. [2021-11-25 17:55:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.9249146757679183) internal successors, (2571), 879 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) [2021-11-25 17:55:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2571 transitions. [2021-11-25 17:55:27,166 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2571 transitions. Word has length 36 [2021-11-25 17:55:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:27,166 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2571 transitions. [2021-11-25 17:55:27,166 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) [2021-11-25 17:55:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2571 transitions. [2021-11-25 17:55:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:27,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:27,167 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] [2021-11-25 17:55:27,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-11-25 17:55:27,168 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash 268918420, now seen corresponding path program 147 times [2021-11-25 17:55:27,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:27,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790548414] [2021-11-25 17:55:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:27,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:27,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:27,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790548414] [2021-11-25 17:55:27,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790548414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:27,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:27,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:27,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137672680] [2021-11-25 17:55:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:27,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:27,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:27,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:27,553 INFO L87 Difference]: Start difference. First operand 880 states and 2571 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) [2021-11-25 17:55:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:28,695 INFO L93 Difference]: Finished difference Result 2646 states and 7185 transitions. [2021-11-25 17:55:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:28,696 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 [2021-11-25 17:55:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:28,699 INFO L225 Difference]: With dead ends: 2646 [2021-11-25 17:55:28,700 INFO L226 Difference]: Without dead ends: 2631 [2021-11-25 17:55:28,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:55:28,700 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 377 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:28,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 0 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:55:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2021-11-25 17:55:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 835. [2021-11-25 17:55:28,719 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) [2021-11-25 17:55:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2412 transitions. [2021-11-25 17:55:28,721 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2412 transitions. Word has length 36 [2021-11-25 17:55:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:28,721 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2412 transitions. [2021-11-25 17:55:28,721 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) [2021-11-25 17:55:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2412 transitions. [2021-11-25 17:55:28,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:28,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:28,722 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] [2021-11-25 17:55:28,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-11-25 17:55:28,722 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 614409632, now seen corresponding path program 148 times [2021-11-25 17:55:28,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:28,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035661158] [2021-11-25 17:55:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:28,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:29,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035661158] [2021-11-25 17:55:29,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035661158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:29,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:29,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:29,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471010250] [2021-11-25 17:55:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:29,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:29,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:29,147 INFO L87 Difference]: Start difference. First operand 835 states and 2412 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) [2021-11-25 17:55:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:30,264 INFO L93 Difference]: Finished difference Result 2675 states and 7182 transitions. [2021-11-25 17:55:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:30,265 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 [2021-11-25 17:55:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:30,269 INFO L225 Difference]: With dead ends: 2675 [2021-11-25 17:55:30,269 INFO L226 Difference]: Without dead ends: 2668 [2021-11-25 17:55:30,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:55:30,269 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 332 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:30,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 0 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-11-25 17:55:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 835. [2021-11-25 17:55:30,290 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) [2021-11-25 17:55:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2412 transitions. [2021-11-25 17:55:30,292 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2412 transitions. Word has length 36 [2021-11-25 17:55:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:30,292 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2412 transitions. [2021-11-25 17:55:30,292 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) [2021-11-25 17:55:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2412 transitions. [2021-11-25 17:55:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:30,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:30,293 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] [2021-11-25 17:55:30,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-11-25 17:55:30,293 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1959573216, now seen corresponding path program 149 times [2021-11-25 17:55:30,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:30,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887418233] [2021-11-25 17:55:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:30,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:30,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:30,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887418233] [2021-11-25 17:55:30,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887418233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:30,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:30,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:30,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137508717] [2021-11-25 17:55:30,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:30,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:30,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:30,711 INFO L87 Difference]: Start difference. First operand 835 states and 2412 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) [2021-11-25 17:55:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:31,813 INFO L93 Difference]: Finished difference Result 2653 states and 7136 transitions. [2021-11-25 17:55:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:31,813 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 [2021-11-25 17:55:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:31,817 INFO L225 Difference]: With dead ends: 2653 [2021-11-25 17:55:31,817 INFO L226 Difference]: Without dead ends: 2646 [2021-11-25 17:55:31,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:55:31,817 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 285 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:31,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 0 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-11-25 17:55:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 835. [2021-11-25 17:55:31,836 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) [2021-11-25 17:55:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2412 transitions. [2021-11-25 17:55:31,837 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2412 transitions. Word has length 36 [2021-11-25 17:55:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:31,838 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2412 transitions. [2021-11-25 17:55:31,838 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) [2021-11-25 17:55:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2412 transitions. [2021-11-25 17:55:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:31,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:31,839 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] [2021-11-25 17:55:31,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-11-25 17:55:31,839 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2003609906, now seen corresponding path program 150 times [2021-11-25 17:55:31,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:31,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786639934] [2021-11-25 17:55:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:31,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:32,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:32,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786639934] [2021-11-25 17:55:32,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786639934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:32,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:32,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:55:32,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743756631] [2021-11-25 17:55:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:32,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:55:32,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:55:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:55:32,497 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) [2021-11-25 17:55:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:34,378 INFO L93 Difference]: Finished difference Result 2348 states and 6425 transitions. [2021-11-25 17:55:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:34,379 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 [2021-11-25 17:55:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:34,382 INFO L225 Difference]: With dead ends: 2348 [2021-11-25 17:55:34,383 INFO L226 Difference]: Without dead ends: 2334 [2021-11-25 17:55:34,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=391, Invalid=869, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 17:55:34,383 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 404 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:34,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 0 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:55:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-11-25 17:55:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 849. [2021-11-25 17:55:34,404 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) [2021-11-25 17:55:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2469 transitions. [2021-11-25 17:55:34,406 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2469 transitions. Word has length 36 [2021-11-25 17:55:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:34,406 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2469 transitions. [2021-11-25 17:55:34,406 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) [2021-11-25 17:55:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2469 transitions. [2021-11-25 17:55:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:34,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:34,407 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] [2021-11-25 17:55:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-11-25 17:55:34,407 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1532978034, now seen corresponding path program 151 times [2021-11-25 17:55:34,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:34,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552656111] [2021-11-25 17:55:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:34,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:34,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:34,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552656111] [2021-11-25 17:55:34,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552656111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:34,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:34,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:34,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004714930] [2021-11-25 17:55:34,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:34,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:34,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:34,808 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) [2021-11-25 17:55:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:35,929 INFO L93 Difference]: Finished difference Result 2514 states and 6836 transitions. [2021-11-25 17:55:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:35,929 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 [2021-11-25 17:55:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:35,933 INFO L225 Difference]: With dead ends: 2514 [2021-11-25 17:55:35,933 INFO L226 Difference]: Without dead ends: 2507 [2021-11-25 17:55:35,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:55:35,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 375 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:35,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 0 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-11-25 17:55:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 849. [2021-11-25 17:55:35,956 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) [2021-11-25 17:55:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2451 transitions. [2021-11-25 17:55:35,958 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2451 transitions. Word has length 36 [2021-11-25 17:55:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:35,958 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2451 transitions. [2021-11-25 17:55:35,958 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) [2021-11-25 17:55:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2451 transitions. [2021-11-25 17:55:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:35,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:35,960 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] [2021-11-25 17:55:35,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-11-25 17:55:35,960 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -243083814, now seen corresponding path program 152 times [2021-11-25 17:55:35,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221068828] [2021-11-25 17:55:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:35,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:36,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221068828] [2021-11-25 17:55:36,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221068828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:36,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:36,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-25 17:55:36,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846463270] [2021-11-25 17:55:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:36,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 17:55:36,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 17:55:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:55:36,699 INFO L87 Difference]: Start difference. First operand 849 states and 2451 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) [2021-11-25 17:55:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:38,978 INFO L93 Difference]: Finished difference Result 2309 states and 6307 transitions. [2021-11-25 17:55:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:38,978 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 [2021-11-25 17:55:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:38,982 INFO L225 Difference]: With dead ends: 2309 [2021-11-25 17:55:38,982 INFO L226 Difference]: Without dead ends: 2294 [2021-11-25 17:55:39,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 17:55:39,001 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 530 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:39,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 0 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:55:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-11-25 17:55:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 847. [2021-11-25 17:55:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 2.8877068557919623) internal successors, (2443), 846 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2443 transitions. [2021-11-25 17:55:39,021 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2443 transitions. Word has length 36 [2021-11-25 17:55:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:39,021 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 2443 transitions. [2021-11-25 17:55:39,021 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) [2021-11-25 17:55:39,021 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2443 transitions. [2021-11-25 17:55:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:39,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:39,022 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] [2021-11-25 17:55:39,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-11-25 17:55:39,023 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash 180312160, now seen corresponding path program 153 times [2021-11-25 17:55:39,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28600809] [2021-11-25 17:55:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:39,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:39,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:39,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28600809] [2021-11-25 17:55:39,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28600809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:39,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:39,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 17:55:39,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645970582] [2021-11-25 17:55:39,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:39,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 17:55:39,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:39,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 17:55:39,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:55:39,519 INFO L87 Difference]: Start difference. First operand 847 states and 2443 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) [2021-11-25 17:55:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:46,522 INFO L93 Difference]: Finished difference Result 2791 states and 7493 transitions. [2021-11-25 17:55:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 17:55:46,523 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 [2021-11-25 17:55:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:46,526 INFO L225 Difference]: With dead ends: 2791 [2021-11-25 17:55:46,527 INFO L226 Difference]: Without dead ends: 2784 [2021-11-25 17:55:46,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=880, Invalid=2660, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 17:55:46,527 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 345 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:46,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 0 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 17:55:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-11-25 17:55:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 845. [2021-11-25 17:55:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.8862559241706163) internal successors, (2436), 844 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2436 transitions. [2021-11-25 17:55:46,549 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2436 transitions. Word has length 36 [2021-11-25 17:55:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 2436 transitions. [2021-11-25 17:55:46,549 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) [2021-11-25 17:55:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2436 transitions. [2021-11-25 17:55:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:46,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:46,550 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] [2021-11-25 17:55:46,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-11-25 17:55:46,551 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash 530014024, now seen corresponding path program 154 times [2021-11-25 17:55:46,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:46,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196414875] [2021-11-25 17:55:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:46,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:46,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:46,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196414875] [2021-11-25 17:55:46,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196414875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:46,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:46,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:55:46,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963523208] [2021-11-25 17:55:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:46,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:55:46,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:55:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:55:46,980 INFO L87 Difference]: Start difference. First operand 845 states and 2436 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) [2021-11-25 17:55:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:48,312 INFO L93 Difference]: Finished difference Result 2403 states and 6417 transitions. [2021-11-25 17:55:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:48,313 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 [2021-11-25 17:55:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:48,316 INFO L225 Difference]: With dead ends: 2403 [2021-11-25 17:55:48,316 INFO L226 Difference]: Without dead ends: 2396 [2021-11-25 17:55:48,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:55:48,316 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:48,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:55:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2021-11-25 17:55:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 817. [2021-11-25 17:55:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.8786764705882355) internal successors, (2349), 816 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2349 transitions. [2021-11-25 17:55:48,336 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2349 transitions. Word has length 36 [2021-11-25 17:55:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:48,336 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2349 transitions. [2021-11-25 17:55:48,336 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) [2021-11-25 17:55:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2349 transitions. [2021-11-25 17:55:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:48,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:48,338 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] [2021-11-25 17:55:48,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-11-25 17:55:48,338 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1047069670, now seen corresponding path program 155 times [2021-11-25 17:55:48,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:48,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164938824] [2021-11-25 17:55:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:48,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:48,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:48,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164938824] [2021-11-25 17:55:48,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164938824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:48,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:48,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:55:48,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876360381] [2021-11-25 17:55:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:48,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:55:48,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:55:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:55:48,907 INFO L87 Difference]: Start difference. First operand 817 states and 2349 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) [2021-11-25 17:55:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:51,195 INFO L93 Difference]: Finished difference Result 2763 states and 7515 transitions. [2021-11-25 17:55:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:55:51,196 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 [2021-11-25 17:55:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:51,200 INFO L225 Difference]: With dead ends: 2763 [2021-11-25 17:55:51,200 INFO L226 Difference]: Without dead ends: 2749 [2021-11-25 17:55:51,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=387, Invalid=873, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 17:55:51,200 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:51,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:55:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-25 17:55:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 811. [2021-11-25 17:55:51,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 810 states have (on average 2.8679012345679014) internal successors, (2323), 810 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 2323 transitions. [2021-11-25 17:55:51,222 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 2323 transitions. Word has length 36 [2021-11-25 17:55:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:51,222 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 2323 transitions. [2021-11-25 17:55:51,222 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) [2021-11-25 17:55:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 2323 transitions. [2021-11-25 17:55:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:51,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:51,223 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] [2021-11-25 17:55:51,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-11-25 17:55:51,224 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1001203906, now seen corresponding path program 156 times [2021-11-25 17:55:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225227260] [2021-11-25 17:55:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:51,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:51,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:51,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225227260] [2021-11-25 17:55:51,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225227260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:51,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:51,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:51,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317298064] [2021-11-25 17:55:51,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:51,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:51,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:51,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:51,694 INFO L87 Difference]: Start difference. First operand 811 states and 2323 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) [2021-11-25 17:55:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:52,795 INFO L93 Difference]: Finished difference Result 2440 states and 6634 transitions. [2021-11-25 17:55:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:55:52,796 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 [2021-11-25 17:55:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:52,799 INFO L225 Difference]: With dead ends: 2440 [2021-11-25 17:55:52,799 INFO L226 Difference]: Without dead ends: 2425 [2021-11-25 17:55:52,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:55:52,800 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:52,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:55:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-25 17:55:52,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 769. [2021-11-25 17:55:52,818 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) [2021-11-25 17:55:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2177 transitions. [2021-11-25 17:55:52,820 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2177 transitions. Word has length 36 [2021-11-25 17:55:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:52,820 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 2177 transitions. [2021-11-25 17:55:52,820 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) [2021-11-25 17:55:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2177 transitions. [2021-11-25 17:55:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:52,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:52,821 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] [2021-11-25 17:55:52,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-11-25 17:55:52,821 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1253455856, now seen corresponding path program 157 times [2021-11-25 17:55:52,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:52,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410528471] [2021-11-25 17:55:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:52,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:53,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:53,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410528471] [2021-11-25 17:55:53,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410528471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:53,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:53,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:53,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254513553] [2021-11-25 17:55:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:53,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:53,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:53,342 INFO L87 Difference]: Start difference. First operand 769 states and 2177 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) [2021-11-25 17:55:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:54,236 INFO L93 Difference]: Finished difference Result 1321 states and 3551 transitions. [2021-11-25 17:55:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:55:54,236 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 [2021-11-25 17:55:54,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:54,238 INFO L225 Difference]: With dead ends: 1321 [2021-11-25 17:55:54,238 INFO L226 Difference]: Without dead ends: 1314 [2021-11-25 17:55:54,238 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 [2021-11-25 17:55:54,239 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:54,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:55:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-11-25 17:55:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 787. [2021-11-25 17:55:54,250 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) [2021-11-25 17:55:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2237 transitions. [2021-11-25 17:55:54,251 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2237 transitions. Word has length 36 [2021-11-25 17:55:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:54,252 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2237 transitions. [2021-11-25 17:55:54,252 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) [2021-11-25 17:55:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2237 transitions. [2021-11-25 17:55:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:54,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:54,253 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] [2021-11-25 17:55:54,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-11-25 17:55:54,253 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1984223514, now seen corresponding path program 158 times [2021-11-25 17:55:54,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:54,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076746857] [2021-11-25 17:55:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:54,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:54,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076746857] [2021-11-25 17:55:54,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076746857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:54,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:54,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:54,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138585841] [2021-11-25 17:55:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:54,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:54,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:54,694 INFO L87 Difference]: Start difference. First operand 787 states and 2237 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) [2021-11-25 17:55:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:55,586 INFO L93 Difference]: Finished difference Result 1411 states and 3772 transitions. [2021-11-25 17:55:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:55:55,586 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 [2021-11-25 17:55:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:55,588 INFO L225 Difference]: With dead ends: 1411 [2021-11-25 17:55:55,589 INFO L226 Difference]: Without dead ends: 1404 [2021-11-25 17:55:55,589 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 [2021-11-25 17:55:55,589 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 329 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:55,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 0 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:55:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-11-25 17:55:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 805. [2021-11-25 17:55:55,600 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) [2021-11-25 17:55:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2294 transitions. [2021-11-25 17:55:55,602 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2294 transitions. Word has length 36 [2021-11-25 17:55:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:55,602 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2294 transitions. [2021-11-25 17:55:55,602 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) [2021-11-25 17:55:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2294 transitions. [2021-11-25 17:55:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:55,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:55,603 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] [2021-11-25 17:55:55,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-11-25 17:55:55,604 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1381701024, now seen corresponding path program 159 times [2021-11-25 17:55:55,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:55,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635211363] [2021-11-25 17:55:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:55,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:56,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:56,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635211363] [2021-11-25 17:55:56,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635211363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:56,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:56,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:56,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15494436] [2021-11-25 17:55:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:56,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:56,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:56,066 INFO L87 Difference]: Start difference. First operand 805 states and 2294 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) [2021-11-25 17:55:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:56,885 INFO L93 Difference]: Finished difference Result 1397 states and 3749 transitions. [2021-11-25 17:55:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:55:56,887 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 [2021-11-25 17:55:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:56,890 INFO L225 Difference]: With dead ends: 1397 [2021-11-25 17:55:56,890 INFO L226 Difference]: Without dead ends: 1390 [2021-11-25 17:55:56,907 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 [2021-11-25 17:55:56,908 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:56,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:55:56,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-25 17:55:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 781. [2021-11-25 17:55:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 2.8461538461538463) internal successors, (2220), 780 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) [2021-11-25 17:55:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 2220 transitions. [2021-11-25 17:55:56,925 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 2220 transitions. Word has length 36 [2021-11-25 17:55:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:56,925 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 2220 transitions. [2021-11-25 17:55:56,925 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) [2021-11-25 17:55:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 2220 transitions. [2021-11-25 17:55:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:56,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:56,927 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] [2021-11-25 17:55:56,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-11-25 17:55:56,927 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2029968290, now seen corresponding path program 160 times [2021-11-25 17:55:56,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:56,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714760442] [2021-11-25 17:55:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:56,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:57,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:57,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714760442] [2021-11-25 17:55:57,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714760442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:57,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:57,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:57,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673150308] [2021-11-25 17:55:57,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:57,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:57,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:57,319 INFO L87 Difference]: Start difference. First operand 781 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) [2021-11-25 17:55:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:58,115 INFO L93 Difference]: Finished difference Result 1251 states and 3372 transitions. [2021-11-25 17:55:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:55:58,115 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 [2021-11-25 17:55:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:58,117 INFO L225 Difference]: With dead ends: 1251 [2021-11-25 17:55:58,117 INFO L226 Difference]: Without dead ends: 1244 [2021-11-25 17:55:58,118 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 [2021-11-25 17:55:58,118 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 342 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 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 [2021-11-25 17:55:58,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 0 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:55:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-11-25 17:55:58,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 785. [2021-11-25 17:55:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 2.8431122448979593) internal successors, (2229), 784 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) [2021-11-25 17:55:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2229 transitions. [2021-11-25 17:55:58,132 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2229 transitions. Word has length 36 [2021-11-25 17:55:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:58,132 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 2229 transitions. [2021-11-25 17:55:58,132 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) [2021-11-25 17:55:58,132 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2229 transitions. [2021-11-25 17:55:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:58,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:58,133 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] [2021-11-25 17:55:58,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-11-25 17:55:58,133 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash -404243988, now seen corresponding path program 161 times [2021-11-25 17:55:58,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:58,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819354220] [2021-11-25 17:55:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:58,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:58,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:58,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819354220] [2021-11-25 17:55:58,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819354220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:58,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:58,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:58,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786960585] [2021-11-25 17:55:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:58,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:58,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:58,614 INFO L87 Difference]: Start difference. First operand 785 states and 2229 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) [2021-11-25 17:55:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:59,326 INFO L93 Difference]: Finished difference Result 1274 states and 3430 transitions. [2021-11-25 17:55:59,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:55:59,327 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 [2021-11-25 17:55:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:59,328 INFO L225 Difference]: With dead ends: 1274 [2021-11-25 17:55:59,328 INFO L226 Difference]: Without dead ends: 1260 [2021-11-25 17:55:59,328 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 [2021-11-25 17:55:59,329 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 357 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:59,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 0 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:55:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-25 17:55:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 794. [2021-11-25 17:55:59,340 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) [2021-11-25 17:55:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 2250 transitions. [2021-11-25 17:55:59,342 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 2250 transitions. Word has length 36 [2021-11-25 17:55:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:59,342 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 2250 transitions. [2021-11-25 17:55:59,342 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) [2021-11-25 17:55:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 2250 transitions. [2021-11-25 17:55:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:55:59,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:59,343 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] [2021-11-25 17:55:59,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-11-25 17:55:59,343 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:55:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash 354135368, now seen corresponding path program 162 times [2021-11-25 17:55:59,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:59,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716165021] [2021-11-25 17:55:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:59,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:55:59,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:59,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716165021] [2021-11-25 17:55:59,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716165021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:59,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:55:59,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:55:59,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617788301] [2021-11-25 17:55:59,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:59,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:55:59,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:59,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:55:59,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:55:59,748 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) [2021-11-25 17:56:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:00,508 INFO L93 Difference]: Finished difference Result 1280 states and 3437 transitions. [2021-11-25 17:56:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:00,509 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 [2021-11-25 17:56:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:00,511 INFO L225 Difference]: With dead ends: 1280 [2021-11-25 17:56:00,511 INFO L226 Difference]: Without dead ends: 1273 [2021-11-25 17:56:00,511 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 [2021-11-25 17:56:00,511 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 339 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:00,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 0 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-25 17:56:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 782. [2021-11-25 17:56:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 2.8450704225352115) internal successors, (2222), 781 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) [2021-11-25 17:56:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2222 transitions. [2021-11-25 17:56:00,525 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 2222 transitions. Word has length 36 [2021-11-25 17:56:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:00,525 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 2222 transitions. [2021-11-25 17:56:00,525 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) [2021-11-25 17:56:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2222 transitions. [2021-11-25 17:56:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:00,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:00,526 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] [2021-11-25 17:56:00,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-11-25 17:56:00,526 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1583204906, now seen corresponding path program 163 times [2021-11-25 17:56:00,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:00,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800521153] [2021-11-25 17:56:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:00,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:00,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800521153] [2021-11-25 17:56:00,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800521153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:00,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:00,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:00,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884300370] [2021-11-25 17:56:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:00,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:00,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:00,968 INFO L87 Difference]: Start difference. First operand 782 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) [2021-11-25 17:56:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:01,702 INFO L93 Difference]: Finished difference Result 1397 states and 3804 transitions. [2021-11-25 17:56:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:01,702 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 [2021-11-25 17:56:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:01,704 INFO L225 Difference]: With dead ends: 1397 [2021-11-25 17:56:01,704 INFO L226 Difference]: Without dead ends: 1383 [2021-11-25 17:56:01,704 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 [2021-11-25 17:56:01,704 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 336 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:01,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 0 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2021-11-25 17:56:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 818. [2021-11-25 17:56:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 2.8776009791921666) internal successors, (2351), 817 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2351 transitions. [2021-11-25 17:56:01,718 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2351 transitions. Word has length 36 [2021-11-25 17:56:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:01,718 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 2351 transitions. [2021-11-25 17:56:01,719 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) [2021-11-25 17:56:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2351 transitions. [2021-11-25 17:56:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:01,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:01,720 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] [2021-11-25 17:56:01,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-11-25 17:56:01,720 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash -824825550, now seen corresponding path program 164 times [2021-11-25 17:56:01,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:01,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548532283] [2021-11-25 17:56:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:01,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:02,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548532283] [2021-11-25 17:56:02,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548532283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:02,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:02,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 17:56:02,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554800606] [2021-11-25 17:56:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:02,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 17:56:02,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 17:56:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:56:02,396 INFO L87 Difference]: Start difference. First operand 818 states and 2351 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) [2021-11-25 17:56:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:03,243 INFO L93 Difference]: Finished difference Result 1403 states and 3811 transitions. [2021-11-25 17:56:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:03,244 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 [2021-11-25 17:56:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:03,246 INFO L225 Difference]: With dead ends: 1403 [2021-11-25 17:56:03,246 INFO L226 Difference]: Without dead ends: 1396 [2021-11-25 17:56:03,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:56:03,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 363 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:03,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 0 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-25 17:56:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 809. [2021-11-25 17:56:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.883663366336634) internal successors, (2330), 808 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) [2021-11-25 17:56:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2330 transitions. [2021-11-25 17:56:03,260 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2330 transitions. Word has length 36 [2021-11-25 17:56:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:03,260 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2330 transitions. [2021-11-25 17:56:03,260 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) [2021-11-25 17:56:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2330 transitions. [2021-11-25 17:56:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:03,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:03,261 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] [2021-11-25 17:56:03,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-11-25 17:56:03,262 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash -318759332, now seen corresponding path program 165 times [2021-11-25 17:56:03,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:03,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505569567] [2021-11-25 17:56:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:03,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:03,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:03,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505569567] [2021-11-25 17:56:03,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505569567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:03,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:03,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:03,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361814785] [2021-11-25 17:56:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:03,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:03,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:03,721 INFO L87 Difference]: Start difference. First operand 809 states and 2330 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) [2021-11-25 17:56:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:05,147 INFO L93 Difference]: Finished difference Result 1517 states and 4243 transitions. [2021-11-25 17:56:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:56:05,148 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 [2021-11-25 17:56:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:05,150 INFO L225 Difference]: With dead ends: 1517 [2021-11-25 17:56:05,150 INFO L226 Difference]: Without dead ends: 1503 [2021-11-25 17:56:05,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:56:05,151 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 388 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:05,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 0 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:56:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-11-25 17:56:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 826. [2021-11-25 17:56:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.9066666666666667) internal successors, (2398), 825 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2398 transitions. [2021-11-25 17:56:05,167 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2398 transitions. Word has length 36 [2021-11-25 17:56:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:05,167 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2398 transitions. [2021-11-25 17:56:05,167 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) [2021-11-25 17:56:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2398 transitions. [2021-11-25 17:56:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:05,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:05,168 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] [2021-11-25 17:56:05,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-11-25 17:56:05,168 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash -439494942, now seen corresponding path program 166 times [2021-11-25 17:56:05,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:05,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797921018] [2021-11-25 17:56:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:05,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:05,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:05,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797921018] [2021-11-25 17:56:05,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797921018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:05,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:05,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:05,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962233930] [2021-11-25 17:56:05,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:05,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:05,499 INFO L87 Difference]: Start difference. First operand 826 states and 2398 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) [2021-11-25 17:56:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:06,280 INFO L93 Difference]: Finished difference Result 1395 states and 3828 transitions. [2021-11-25 17:56:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:06,281 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 [2021-11-25 17:56:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:06,283 INFO L225 Difference]: With dead ends: 1395 [2021-11-25 17:56:06,283 INFO L226 Difference]: Without dead ends: 1388 [2021-11-25 17:56:06,283 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 [2021-11-25 17:56:06,283 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 285 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:06,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 0 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:56:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-11-25 17:56:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 836. [2021-11-25 17:56:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 2.9089820359281435) internal successors, (2429), 835 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2429 transitions. [2021-11-25 17:56:06,297 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2429 transitions. Word has length 36 [2021-11-25 17:56:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:06,297 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2429 transitions. [2021-11-25 17:56:06,297 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) [2021-11-25 17:56:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2429 transitions. [2021-11-25 17:56:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:06,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:06,298 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] [2021-11-25 17:56:06,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-11-25 17:56:06,299 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:06,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash -131834782, now seen corresponding path program 167 times [2021-11-25 17:56:06,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395120425] [2021-11-25 17:56:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:06,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:06,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:06,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395120425] [2021-11-25 17:56:06,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395120425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:06,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:06,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58470348] [2021-11-25 17:56:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:06,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:06,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:06,698 INFO L87 Difference]: Start difference. First operand 836 states and 2429 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) [2021-11-25 17:56:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:09,070 INFO L93 Difference]: Finished difference Result 1744 states and 4859 transitions. [2021-11-25 17:56:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 17:56:09,070 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 [2021-11-25 17:56:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:09,073 INFO L225 Difference]: With dead ends: 1744 [2021-11-25 17:56:09,073 INFO L226 Difference]: Without dead ends: 1737 [2021-11-25 17:56:09,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=471, Invalid=1089, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:56:09,073 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 425 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:09,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 0 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:56:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2021-11-25 17:56:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 838. [2021-11-25 17:56:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.912783751493429) internal successors, (2438), 837 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2438 transitions. [2021-11-25 17:56:09,091 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2438 transitions. Word has length 36 [2021-11-25 17:56:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:09,092 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2438 transitions. [2021-11-25 17:56:09,092 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) [2021-11-25 17:56:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2438 transitions. [2021-11-25 17:56:09,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:09,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:09,093 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] [2021-11-25 17:56:09,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-11-25 17:56:09,093 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1060877540, now seen corresponding path program 168 times [2021-11-25 17:56:09,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:09,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969898361] [2021-11-25 17:56:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:09,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:09,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969898361] [2021-11-25 17:56:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969898361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:09,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:09,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:09,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765527433] [2021-11-25 17:56:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:09,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:09,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:09,618 INFO L87 Difference]: Start difference. First operand 838 states and 2438 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) [2021-11-25 17:56:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:12,211 INFO L93 Difference]: Finished difference Result 1777 states and 4921 transitions. [2021-11-25 17:56:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 17:56:12,211 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 [2021-11-25 17:56:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:12,214 INFO L225 Difference]: With dead ends: 1777 [2021-11-25 17:56:12,214 INFO L226 Difference]: Without dead ends: 1770 [2021-11-25 17:56:12,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=504, Invalid=1056, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:56:12,214 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 360 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:12,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 0 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:56:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-11-25 17:56:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 837. [2021-11-25 17:56:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.9055023923444976) internal successors, (2429), 836 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2429 transitions. [2021-11-25 17:56:12,241 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2429 transitions. Word has length 36 [2021-11-25 17:56:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:12,241 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2429 transitions. [2021-11-25 17:56:12,241 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) [2021-11-25 17:56:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2429 transitions. [2021-11-25 17:56:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:12,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:12,243 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] [2021-11-25 17:56:12,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-11-25 17:56:12,243 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash 529432268, now seen corresponding path program 169 times [2021-11-25 17:56:12,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:12,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586659220] [2021-11-25 17:56:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:12,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:12,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:12,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586659220] [2021-11-25 17:56:12,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586659220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:12,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:12,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:12,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215964804] [2021-11-25 17:56:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:12,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:12,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:12,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:12,634 INFO L87 Difference]: Start difference. First operand 837 states and 2429 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) [2021-11-25 17:56:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:13,353 INFO L93 Difference]: Finished difference Result 1477 states and 4022 transitions. [2021-11-25 17:56:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:13,354 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 [2021-11-25 17:56:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:13,356 INFO L225 Difference]: With dead ends: 1477 [2021-11-25 17:56:13,356 INFO L226 Difference]: Without dead ends: 1470 [2021-11-25 17:56:13,356 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 [2021-11-25 17:56:13,356 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 379 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:13,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 0 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-25 17:56:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 848. [2021-11-25 17:56:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.9008264462809916) internal successors, (2457), 847 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2457 transitions. [2021-11-25 17:56:13,371 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2457 transitions. Word has length 36 [2021-11-25 17:56:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:13,371 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 2457 transitions. [2021-11-25 17:56:13,371 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) [2021-11-25 17:56:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2457 transitions. [2021-11-25 17:56:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:13,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:13,373 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] [2021-11-25 17:56:13,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-11-25 17:56:13,373 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:13,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1156562910, now seen corresponding path program 170 times [2021-11-25 17:56:13,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:13,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655660533] [2021-11-25 17:56:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:13,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:13,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655660533] [2021-11-25 17:56:13,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655660533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:13,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:13,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:13,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251814748] [2021-11-25 17:56:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:13,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:13,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:13,802 INFO L87 Difference]: Start difference. First operand 848 states and 2457 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) [2021-11-25 17:56:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:14,511 INFO L93 Difference]: Finished difference Result 1472 states and 3998 transitions. [2021-11-25 17:56:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:14,512 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 [2021-11-25 17:56:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:14,514 INFO L225 Difference]: With dead ends: 1472 [2021-11-25 17:56:14,514 INFO L226 Difference]: Without dead ends: 1465 [2021-11-25 17:56:14,514 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 [2021-11-25 17:56:14,514 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 282 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:14,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 0 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-11-25 17:56:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 824. [2021-11-25 17:56:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 2.88456865127582) internal successors, (2374), 823 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) [2021-11-25 17:56:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2374 transitions. [2021-11-25 17:56:14,546 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2374 transitions. Word has length 36 [2021-11-25 17:56:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:14,546 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 2374 transitions. [2021-11-25 17:56:14,546 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) [2021-11-25 17:56:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2374 transitions. [2021-11-25 17:56:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:14,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:14,547 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] [2021-11-25 17:56:14,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-11-25 17:56:14,547 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 155218074, now seen corresponding path program 171 times [2021-11-25 17:56:14,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:14,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980984714] [2021-11-25 17:56:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:14,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:14,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980984714] [2021-11-25 17:56:14,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980984714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:14,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:14,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:14,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217804356] [2021-11-25 17:56:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:14,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:14,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:14,873 INFO L87 Difference]: Start difference. First operand 824 states and 2374 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) [2021-11-25 17:56:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:15,659 INFO L93 Difference]: Finished difference Result 1358 states and 3720 transitions. [2021-11-25 17:56:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:15,659 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 [2021-11-25 17:56:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:15,661 INFO L225 Difference]: With dead ends: 1358 [2021-11-25 17:56:15,661 INFO L226 Difference]: Without dead ends: 1344 [2021-11-25 17:56:15,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:56:15,662 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 314 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:15,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 0 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-25 17:56:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 773. [2021-11-25 17:56:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 2.8354922279792745) internal successors, (2189), 772 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 2189 transitions. [2021-11-25 17:56:15,675 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 2189 transitions. Word has length 36 [2021-11-25 17:56:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:15,675 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 2189 transitions. [2021-11-25 17:56:15,675 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) [2021-11-25 17:56:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 2189 transitions. [2021-11-25 17:56:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:15,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:15,676 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] [2021-11-25 17:56:15,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-11-25 17:56:15,676 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash -463146610, now seen corresponding path program 172 times [2021-11-25 17:56:15,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706746164] [2021-11-25 17:56:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:15,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:16,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:16,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706746164] [2021-11-25 17:56:16,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706746164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:16,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:16,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:16,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232175989] [2021-11-25 17:56:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:16,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:16,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:16,203 INFO L87 Difference]: Start difference. First operand 773 states and 2189 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) [2021-11-25 17:56:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:17,118 INFO L93 Difference]: Finished difference Result 1148 states and 3000 transitions. [2021-11-25 17:56:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:17,118 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 [2021-11-25 17:56:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:17,120 INFO L225 Difference]: With dead ends: 1148 [2021-11-25 17:56:17,120 INFO L226 Difference]: Without dead ends: 1141 [2021-11-25 17:56:17,120 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 [2021-11-25 17:56:17,120 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:17,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:56:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-11-25 17:56:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 785. [2021-11-25 17:56:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 2.8354591836734695) internal successors, (2223), 784 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) [2021-11-25 17:56:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2223 transitions. [2021-11-25 17:56:17,132 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2223 transitions. Word has length 36 [2021-11-25 17:56:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:17,132 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 2223 transitions. [2021-11-25 17:56:17,133 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) [2021-11-25 17:56:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2223 transitions. [2021-11-25 17:56:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:17,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:17,134 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] [2021-11-25 17:56:17,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-11-25 17:56:17,134 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1193914268, now seen corresponding path program 173 times [2021-11-25 17:56:17,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:17,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772269893] [2021-11-25 17:56:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:17,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:17,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772269893] [2021-11-25 17:56:17,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772269893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:17,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:17,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:17,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585154670] [2021-11-25 17:56:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:17,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:17,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:17,760 INFO L87 Difference]: Start difference. First operand 785 states and 2223 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) [2021-11-25 17:56:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:22,437 INFO L93 Difference]: Finished difference Result 1447 states and 3775 transitions. [2021-11-25 17:56:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 17:56:22,437 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 [2021-11-25 17:56:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:22,439 INFO L225 Difference]: With dead ends: 1447 [2021-11-25 17:56:22,439 INFO L226 Difference]: Without dead ends: 1440 [2021-11-25 17:56:22,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 17:56:22,440 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 413 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:22,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 0 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:56:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-25 17:56:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 793. [2021-11-25 17:56:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 2.8446969696969697) internal successors, (2253), 792 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) [2021-11-25 17:56:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2253 transitions. [2021-11-25 17:56:22,453 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2253 transitions. Word has length 36 [2021-11-25 17:56:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:22,453 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 2253 transitions. [2021-11-25 17:56:22,453 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) [2021-11-25 17:56:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2253 transitions. [2021-11-25 17:56:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:22,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:22,454 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] [2021-11-25 17:56:22,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-11-25 17:56:22,454 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2122957026, now seen corresponding path program 174 times [2021-11-25 17:56:22,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:22,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914610310] [2021-11-25 17:56:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:22,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:23,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:23,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914610310] [2021-11-25 17:56:23,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914610310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:23,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:23,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:23,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857012062] [2021-11-25 17:56:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:23,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:23,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:23,107 INFO L87 Difference]: Start difference. First operand 793 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) [2021-11-25 17:56:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:28,397 INFO L93 Difference]: Finished difference Result 1465 states and 3829 transitions. [2021-11-25 17:56:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 17:56:28,397 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 [2021-11-25 17:56:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:28,399 INFO L225 Difference]: With dead ends: 1465 [2021-11-25 17:56:28,399 INFO L226 Difference]: Without dead ends: 1458 [2021-11-25 17:56:28,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=583, Invalid=1309, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 17:56:28,400 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 437 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:28,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 0 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:56:28,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-11-25 17:56:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 791. [2021-11-25 17:56:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 2.840506329113924) internal successors, (2244), 790 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 2244 transitions. [2021-11-25 17:56:28,413 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 2244 transitions. Word has length 36 [2021-11-25 17:56:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:28,414 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 2244 transitions. [2021-11-25 17:56:28,414 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) [2021-11-25 17:56:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 2244 transitions. [2021-11-25 17:56:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:28,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:28,415 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] [2021-11-25 17:56:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-11-25 17:56:28,415 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1182467466, now seen corresponding path program 175 times [2021-11-25 17:56:28,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:28,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653826750] [2021-11-25 17:56:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:28,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:28,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653826750] [2021-11-25 17:56:28,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653826750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:28,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:28,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:28,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369498990] [2021-11-25 17:56:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:28,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:28,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:28,874 INFO L87 Difference]: Start difference. First operand 791 states and 2244 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) [2021-11-25 17:56:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:29,726 INFO L93 Difference]: Finished difference Result 1128 states and 2985 transitions. [2021-11-25 17:56:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:29,726 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 [2021-11-25 17:56:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:29,728 INFO L225 Difference]: With dead ends: 1128 [2021-11-25 17:56:29,728 INFO L226 Difference]: Without dead ends: 1121 [2021-11-25 17:56:29,728 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 [2021-11-25 17:56:29,728 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 313 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 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 [2021-11-25 17:56:29,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 0 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-11-25 17:56:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 803. [2021-11-25 17:56:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.8428927680798006) internal successors, (2280), 802 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2280 transitions. [2021-11-25 17:56:29,740 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2280 transitions. Word has length 36 [2021-11-25 17:56:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:29,740 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2280 transitions. [2021-11-25 17:56:29,741 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) [2021-11-25 17:56:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2280 transitions. [2021-11-25 17:56:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:29,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:29,742 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] [2021-11-25 17:56:29,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-11-25 17:56:29,742 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1830572768, now seen corresponding path program 176 times [2021-11-25 17:56:29,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:29,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874984616] [2021-11-25 17:56:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:29,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:30,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:30,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874984616] [2021-11-25 17:56:30,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874984616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:30,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:30,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:30,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349817441] [2021-11-25 17:56:30,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:30,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:30,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:30,233 INFO L87 Difference]: Start difference. First operand 803 states and 2280 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) [2021-11-25 17:56:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:31,433 INFO L93 Difference]: Finished difference Result 1108 states and 2941 transitions. [2021-11-25 17:56:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:31,433 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 [2021-11-25 17:56:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:31,435 INFO L225 Difference]: With dead ends: 1108 [2021-11-25 17:56:31,435 INFO L226 Difference]: Without dead ends: 1101 [2021-11-25 17:56:31,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:56:31,435 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2021-11-25 17:56:31,435 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] [2021-11-25 17:56:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-11-25 17:56:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 779. [2021-11-25 17:56:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 2.83547557840617) internal successors, (2206), 778 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2206 transitions. [2021-11-25 17:56:31,448 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2206 transitions. Word has length 36 [2021-11-25 17:56:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:31,448 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 2206 transitions. [2021-11-25 17:56:31,448 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) [2021-11-25 17:56:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2206 transitions. [2021-11-25 17:56:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:31,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:31,449 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] [2021-11-25 17:56:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-11-25 17:56:31,450 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash 553153632, now seen corresponding path program 177 times [2021-11-25 17:56:31,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:31,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451607154] [2021-11-25 17:56:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:31,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:32,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:32,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451607154] [2021-11-25 17:56:32,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451607154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:32,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:32,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:32,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547937438] [2021-11-25 17:56:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:32,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:32,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:32,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:32,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:32,035 INFO L87 Difference]: Start difference. First operand 779 states and 2206 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) [2021-11-25 17:56:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:32,996 INFO L93 Difference]: Finished difference Result 1020 states and 2707 transitions. [2021-11-25 17:56:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:32,996 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 [2021-11-25 17:56:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:32,998 INFO L225 Difference]: With dead ends: 1020 [2021-11-25 17:56:32,998 INFO L226 Difference]: Without dead ends: 1013 [2021-11-25 17:56:32,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:56:32,998 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 265 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:32,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-11-25 17:56:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 773. [2021-11-25 17:56:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 2.8354922279792745) internal successors, (2189), 772 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 2189 transitions. [2021-11-25 17:56:33,009 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 2189 transitions. Word has length 36 [2021-11-25 17:56:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:33,009 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 2189 transitions. [2021-11-25 17:56:33,009 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) [2021-11-25 17:56:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 2189 transitions. [2021-11-25 17:56:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:33,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:33,010 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] [2021-11-25 17:56:33,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-11-25 17:56:33,010 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 673111956, now seen corresponding path program 178 times [2021-11-25 17:56:33,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:33,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338074241] [2021-11-25 17:56:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:33,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:33,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:33,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338074241] [2021-11-25 17:56:33,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338074241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:33,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:33,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:33,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426184550] [2021-11-25 17:56:33,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:33,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:33,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:33,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:33,581 INFO L87 Difference]: Start difference. First operand 773 states and 2189 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) [2021-11-25 17:56:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:36,375 INFO L93 Difference]: Finished difference Result 1129 states and 3036 transitions. [2021-11-25 17:56:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:56:36,375 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 [2021-11-25 17:56:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:36,377 INFO L225 Difference]: With dead ends: 1129 [2021-11-25 17:56:36,377 INFO L226 Difference]: Without dead ends: 1122 [2021-11-25 17:56:36,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:56:36,377 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 348 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:36,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 0 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:56:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-11-25 17:56:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 782. [2021-11-25 17:56:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 2.8373879641485273) internal successors, (2216), 781 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2216 transitions. [2021-11-25 17:56:36,390 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 2216 transitions. Word has length 36 [2021-11-25 17:56:36,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:36,390 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 2216 transitions. [2021-11-25 17:56:36,390 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) [2021-11-25 17:56:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2216 transitions. [2021-11-25 17:56:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:36,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:36,391 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] [2021-11-25 17:56:36,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-11-25 17:56:36,391 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1761100322, now seen corresponding path program 179 times [2021-11-25 17:56:36,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:36,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793812540] [2021-11-25 17:56:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:36,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:36,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793812540] [2021-11-25 17:56:36,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793812540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:36,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:36,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:36,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825856934] [2021-11-25 17:56:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:36,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:36,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:36,837 INFO L87 Difference]: Start difference. First operand 782 states and 2216 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) [2021-11-25 17:56:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:37,660 INFO L93 Difference]: Finished difference Result 928 states and 2464 transitions. [2021-11-25 17:56:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:56:37,660 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 [2021-11-25 17:56:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:37,662 INFO L225 Difference]: With dead ends: 928 [2021-11-25 17:56:37,662 INFO L226 Difference]: Without dead ends: 914 [2021-11-25 17:56:37,662 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 [2021-11-25 17:56:37,662 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:37,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:56:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-25 17:56:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 795. [2021-11-25 17:56:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.8287153652392947) internal successors, (2246), 794 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) [2021-11-25 17:56:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2246 transitions. [2021-11-25 17:56:37,675 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2246 transitions. Word has length 36 [2021-11-25 17:56:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:37,675 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2246 transitions. [2021-11-25 17:56:37,675 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) [2021-11-25 17:56:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2246 transitions. [2021-11-25 17:56:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:37,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:37,676 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] [2021-11-25 17:56:37,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-11-25 17:56:37,677 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1002720966, now seen corresponding path program 180 times [2021-11-25 17:56:37,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:37,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099877475] [2021-11-25 17:56:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:37,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:38,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:38,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099877475] [2021-11-25 17:56:38,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099877475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:38,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:38,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:38,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806585275] [2021-11-25 17:56:38,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:38,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:38,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:38,270 INFO L87 Difference]: Start difference. First operand 795 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) [2021-11-25 17:56:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:40,100 INFO L93 Difference]: Finished difference Result 1104 states and 3008 transitions. [2021-11-25 17:56:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 17:56:40,100 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 [2021-11-25 17:56:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:40,102 INFO L225 Difference]: With dead ends: 1104 [2021-11-25 17:56:40,102 INFO L226 Difference]: Without dead ends: 1097 [2021-11-25 17:56:40,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:56:40,102 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 320 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:40,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 0 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:56:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-11-25 17:56:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 801. [2021-11-25 17:56:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 2.825) internal successors, (2260), 800 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) [2021-11-25 17:56:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 2260 transitions. [2021-11-25 17:56:40,115 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 2260 transitions. Word has length 36 [2021-11-25 17:56:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:40,115 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 2260 transitions. [2021-11-25 17:56:40,116 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) [2021-11-25 17:56:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 2260 transitions. [2021-11-25 17:56:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:40,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:40,117 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] [2021-11-25 17:56:40,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-11-25 17:56:40,117 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:40,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2066651536, now seen corresponding path program 181 times [2021-11-25 17:56:40,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:40,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996449157] [2021-11-25 17:56:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:40,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:40,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:40,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996449157] [2021-11-25 17:56:40,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996449157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:40,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:40,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:40,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303285806] [2021-11-25 17:56:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:40,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:40,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:40,649 INFO L87 Difference]: Start difference. First operand 801 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) [2021-11-25 17:56:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:43,137 INFO L93 Difference]: Finished difference Result 1114 states and 3021 transitions. [2021-11-25 17:56:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 17:56:43,138 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 [2021-11-25 17:56:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:43,139 INFO L225 Difference]: With dead ends: 1114 [2021-11-25 17:56:43,139 INFO L226 Difference]: Without dead ends: 1107 [2021-11-25 17:56:43,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=304, Invalid=688, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:56:43,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 323 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:43,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 0 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:56:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-25 17:56:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 792. [2021-11-25 17:56:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 2.8305941845764853) internal successors, (2239), 791 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) [2021-11-25 17:56:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2239 transitions. [2021-11-25 17:56:43,151 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2239 transitions. Word has length 36 [2021-11-25 17:56:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:43,152 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2239 transitions. [2021-11-25 17:56:43,152 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) [2021-11-25 17:56:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2239 transitions. [2021-11-25 17:56:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:43,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:43,153 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] [2021-11-25 17:56:43,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-11-25 17:56:43,153 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -739912946, now seen corresponding path program 182 times [2021-11-25 17:56:43,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:43,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516710571] [2021-11-25 17:56:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:43,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:43,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:43,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516710571] [2021-11-25 17:56:43,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516710571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:43,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:43,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:56:43,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495154917] [2021-11-25 17:56:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:43,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:56:43,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:56:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:56:43,907 INFO L87 Difference]: Start difference. First operand 792 states and 2239 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) [2021-11-25 17:56:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:46,796 INFO L93 Difference]: Finished difference Result 1084 states and 2952 transitions. [2021-11-25 17:56:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 17:56:46,797 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 [2021-11-25 17:56:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:46,799 INFO L225 Difference]: With dead ends: 1084 [2021-11-25 17:56:46,799 INFO L226 Difference]: Without dead ends: 1077 [2021-11-25 17:56:46,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:56:46,799 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 299 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:46,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 0 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:56:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2021-11-25 17:56:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 780. [2021-11-25 17:56:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.8228498074454427) internal successors, (2199), 779 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2199 transitions. [2021-11-25 17:56:46,826 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2199 transitions. Word has length 36 [2021-11-25 17:56:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:46,826 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 2199 transitions. [2021-11-25 17:56:46,826 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) [2021-11-25 17:56:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2199 transitions. [2021-11-25 17:56:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:46,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:46,827 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] [2021-11-25 17:56:46,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-11-25 17:56:46,827 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1231416822, now seen corresponding path program 183 times [2021-11-25 17:56:46,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:46,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78004810] [2021-11-25 17:56:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:46,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:47,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:47,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78004810] [2021-11-25 17:56:47,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78004810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:47,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:47,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:47,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93709209] [2021-11-25 17:56:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:47,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:47,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:47,263 INFO L87 Difference]: Start difference. First operand 780 states and 2199 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) [2021-11-25 17:56:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:48,573 INFO L93 Difference]: Finished difference Result 2140 states and 5726 transitions. [2021-11-25 17:56:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:56:48,573 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 [2021-11-25 17:56:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:48,577 INFO L225 Difference]: With dead ends: 2140 [2021-11-25 17:56:48,577 INFO L226 Difference]: Without dead ends: 2125 [2021-11-25 17:56:48,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:56:48,577 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:48,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:56:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2021-11-25 17:56:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 783. [2021-11-25 17:56:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 2.819693094629156) internal successors, (2205), 782 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 2205 transitions. [2021-11-25 17:56:48,597 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 2205 transitions. Word has length 36 [2021-11-25 17:56:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:48,597 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 2205 transitions. [2021-11-25 17:56:48,597 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) [2021-11-25 17:56:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 2205 transitions. [2021-11-25 17:56:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:48,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:48,598 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] [2021-11-25 17:56:48,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-11-25 17:56:48,598 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash 644472630, now seen corresponding path program 184 times [2021-11-25 17:56:48,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:48,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003639224] [2021-11-25 17:56:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:48,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:49,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:49,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003639224] [2021-11-25 17:56:49,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003639224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:49,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:49,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:49,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402552269] [2021-11-25 17:56:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:49,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:49,142 INFO L87 Difference]: Start difference. First operand 783 states and 2205 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) [2021-11-25 17:56:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:50,374 INFO L93 Difference]: Finished difference Result 2148 states and 5733 transitions. [2021-11-25 17:56:50,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:56:50,375 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 [2021-11-25 17:56:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:50,378 INFO L225 Difference]: With dead ends: 2148 [2021-11-25 17:56:50,378 INFO L226 Difference]: Without dead ends: 2141 [2021-11-25 17:56:50,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:56:50,379 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 332 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:50,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 0 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:56:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2021-11-25 17:56:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 779. [2021-11-25 17:56:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 2.8239074550128533) internal successors, (2197), 778 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2197 transitions. [2021-11-25 17:56:50,400 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2197 transitions. Word has length 36 [2021-11-25 17:56:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:50,400 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 2197 transitions. [2021-11-25 17:56:50,400 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) [2021-11-25 17:56:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2197 transitions. [2021-11-25 17:56:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:50,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:50,401 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] [2021-11-25 17:56:50,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-11-25 17:56:50,401 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 586421728, now seen corresponding path program 185 times [2021-11-25 17:56:50,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:50,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638580766] [2021-11-25 17:56:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:50,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:50,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638580766] [2021-11-25 17:56:50,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638580766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:50,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:50,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:50,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965109524] [2021-11-25 17:56:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:50,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:50,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:50,873 INFO L87 Difference]: Start difference. First operand 779 states and 2197 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) [2021-11-25 17:56:52,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:52,123 INFO L93 Difference]: Finished difference Result 2055 states and 5575 transitions. [2021-11-25 17:56:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:56:52,124 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 [2021-11-25 17:56:52,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:52,127 INFO L225 Difference]: With dead ends: 2055 [2021-11-25 17:56:52,127 INFO L226 Difference]: Without dead ends: 2040 [2021-11-25 17:56:52,127 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 [2021-11-25 17:56:52,127 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:52,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:56:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-25 17:56:52,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 818. [2021-11-25 17:56:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 2.869033047735618) internal successors, (2344), 817 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) [2021-11-25 17:56:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2344 transitions. [2021-11-25 17:56:52,144 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2344 transitions. Word has length 36 [2021-11-25 17:56:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:52,144 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 2344 transitions. [2021-11-25 17:56:52,144 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) [2021-11-25 17:56:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2344 transitions. [2021-11-25 17:56:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:52,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:52,145 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] [2021-11-25 17:56:52,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-11-25 17:56:52,145 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:52,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1832656116, now seen corresponding path program 186 times [2021-11-25 17:56:52,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:52,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229438456] [2021-11-25 17:56:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:52,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:52,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:52,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229438456] [2021-11-25 17:56:52,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229438456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:52,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:52,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:52,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056019765] [2021-11-25 17:56:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:52,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:52,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:52,631 INFO L87 Difference]: Start difference. First operand 818 states and 2344 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) [2021-11-25 17:56:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:53,551 INFO L93 Difference]: Finished difference Result 2069 states and 5593 transitions. [2021-11-25 17:56:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:56:53,552 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 [2021-11-25 17:56:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:53,554 INFO L225 Difference]: With dead ends: 2069 [2021-11-25 17:56:53,555 INFO L226 Difference]: Without dead ends: 2062 [2021-11-25 17:56:53,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:56:53,555 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:53,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:56:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-11-25 17:56:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 815. [2021-11-25 17:56:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 2.8722358722358723) internal successors, (2338), 814 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 2338 transitions. [2021-11-25 17:56:53,574 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 2338 transitions. Word has length 36 [2021-11-25 17:56:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:53,574 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 2338 transitions. [2021-11-25 17:56:53,574 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) [2021-11-25 17:56:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 2338 transitions. [2021-11-25 17:56:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:53,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:53,575 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] [2021-11-25 17:56:53,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-11-25 17:56:53,576 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1473636454, now seen corresponding path program 187 times [2021-11-25 17:56:53,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619257610] [2021-11-25 17:56:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:53,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:53,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:53,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619257610] [2021-11-25 17:56:53,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619257610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:53,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:53,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:53,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860676829] [2021-11-25 17:56:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:53,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:53,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:53,975 INFO L87 Difference]: Start difference. First operand 815 states and 2338 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) [2021-11-25 17:56:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:55,196 INFO L93 Difference]: Finished difference Result 1990 states and 5440 transitions. [2021-11-25 17:56:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:56:55,196 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 [2021-11-25 17:56:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:55,200 INFO L225 Difference]: With dead ends: 1990 [2021-11-25 17:56:55,200 INFO L226 Difference]: Without dead ends: 1975 [2021-11-25 17:56:55,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:56:55,200 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:55,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:56:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2021-11-25 17:56:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 833. [2021-11-25 17:56:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 2.8641826923076925) internal successors, (2383), 832 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 2383 transitions. [2021-11-25 17:56:55,221 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 2383 transitions. Word has length 36 [2021-11-25 17:56:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:55,222 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 2383 transitions. [2021-11-25 17:56:55,222 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) [2021-11-25 17:56:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2383 transitions. [2021-11-25 17:56:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:55,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:55,223 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] [2021-11-25 17:56:55,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-11-25 17:56:55,223 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 987142582, now seen corresponding path program 188 times [2021-11-25 17:56:55,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895260147] [2021-11-25 17:56:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:55,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:55,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:55,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895260147] [2021-11-25 17:56:55,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895260147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:55,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:55,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:56:55,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024659685] [2021-11-25 17:56:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:55,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:56:55,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:56:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:56:55,599 INFO L87 Difference]: Start difference. First operand 833 states and 2383 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) [2021-11-25 17:56:56,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:56,728 INFO L93 Difference]: Finished difference Result 2026 states and 5502 transitions. [2021-11-25 17:56:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:56:56,728 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 [2021-11-25 17:56:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:56,731 INFO L225 Difference]: With dead ends: 2026 [2021-11-25 17:56:56,731 INFO L226 Difference]: Without dead ends: 2019 [2021-11-25 17:56:56,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:56:56,732 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 301 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:56,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 0 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:56:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2021-11-25 17:56:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 815. [2021-11-25 17:56:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 2.8722358722358723) internal successors, (2338), 814 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:56:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 2338 transitions. [2021-11-25 17:56:56,748 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 2338 transitions. Word has length 36 [2021-11-25 17:56:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:56,749 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 2338 transitions. [2021-11-25 17:56:56,749 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) [2021-11-25 17:56:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 2338 transitions. [2021-11-25 17:56:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:56:56,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:56,750 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] [2021-11-25 17:56:56,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-11-25 17:56:56,750 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:56:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1577877350, now seen corresponding path program 189 times [2021-11-25 17:56:56,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:56,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755716981] [2021-11-25 17:56:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:56,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:56:57,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:57,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755716981] [2021-11-25 17:56:57,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755716981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:57,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:57,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-25 17:56:57,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519881019] [2021-11-25 17:56:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:57,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 17:56:57,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:57,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 17:56:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:56:57,342 INFO L87 Difference]: Start difference. First operand 815 states and 2338 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) [2021-11-25 17:57:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:01,842 INFO L93 Difference]: Finished difference Result 2846 states and 7732 transitions. [2021-11-25 17:57:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-25 17:57:01,843 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 [2021-11-25 17:57:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:01,847 INFO L225 Difference]: With dead ends: 2846 [2021-11-25 17:57:01,847 INFO L226 Difference]: Without dead ends: 2839 [2021-11-25 17:57:01,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2021-11-25 17:57:01,847 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 443 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:01,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 0 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 17:57:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2021-11-25 17:57:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 830. [2021-11-25 17:57:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 2.902291917973462) internal successors, (2406), 829 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) [2021-11-25 17:57:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2406 transitions. [2021-11-25 17:57:01,871 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2406 transitions. Word has length 36 [2021-11-25 17:57:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:01,871 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 2406 transitions. [2021-11-25 17:57:01,871 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) [2021-11-25 17:57:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2406 transitions. [2021-11-25 17:57:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:01,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:01,872 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] [2021-11-25 17:57:01,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-11-25 17:57:01,872 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 648834592, now seen corresponding path program 190 times [2021-11-25 17:57:01,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:01,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508549977] [2021-11-25 17:57:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:01,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:02,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508549977] [2021-11-25 17:57:02,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508549977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:02,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:02,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-25 17:57:02,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120995174] [2021-11-25 17:57:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:02,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 17:57:02,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 17:57:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:02,457 INFO L87 Difference]: Start difference. First operand 830 states and 2406 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) [2021-11-25 17:57:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:07,422 INFO L93 Difference]: Finished difference Result 2862 states and 7781 transitions. [2021-11-25 17:57:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-25 17:57:07,423 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 [2021-11-25 17:57:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:07,427 INFO L225 Difference]: With dead ends: 2862 [2021-11-25 17:57:07,427 INFO L226 Difference]: Without dead ends: 2855 [2021-11-25 17:57:07,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1020, Invalid=2640, Unknown=0, NotChecked=0, Total=3660 [2021-11-25 17:57:07,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 401 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:07,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 0 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 17:57:07,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-11-25 17:57:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 824. [2021-11-25 17:57:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 2.8869987849331715) internal successors, (2376), 823 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2376 transitions. [2021-11-25 17:57:07,451 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2376 transitions. Word has length 36 [2021-11-25 17:57:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:07,452 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 2376 transitions. [2021-11-25 17:57:07,452 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) [2021-11-25 17:57:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2376 transitions. [2021-11-25 17:57:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:07,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:07,453 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] [2021-11-25 17:57:07,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-11-25 17:57:07,453 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 547587276, now seen corresponding path program 191 times [2021-11-25 17:57:07,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:07,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604795780] [2021-11-25 17:57:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:07,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:07,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604795780] [2021-11-25 17:57:07,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604795780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:07,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:07,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:57:07,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855045468] [2021-11-25 17:57:07,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:07,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:57:07,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:57:07,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:57:07,974 INFO L87 Difference]: Start difference. First operand 824 states and 2376 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) [2021-11-25 17:57:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:12,169 INFO L93 Difference]: Finished difference Result 2802 states and 7568 transitions. [2021-11-25 17:57:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-25 17:57:12,170 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 [2021-11-25 17:57:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:12,173 INFO L225 Difference]: With dead ends: 2802 [2021-11-25 17:57:12,173 INFO L226 Difference]: Without dead ends: 2795 [2021-11-25 17:57:12,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=802, Invalid=2060, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 17:57:12,174 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 512 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:12,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 0 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:57:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2021-11-25 17:57:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 830. [2021-11-25 17:57:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 2.893848009650181) internal successors, (2399), 829 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2399 transitions. [2021-11-25 17:57:12,196 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2399 transitions. Word has length 36 [2021-11-25 17:57:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:12,196 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 2399 transitions. [2021-11-25 17:57:12,196 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) [2021-11-25 17:57:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2399 transitions. [2021-11-25 17:57:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:12,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:12,197 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] [2021-11-25 17:57:12,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-11-25 17:57:12,197 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash -381455482, now seen corresponding path program 192 times [2021-11-25 17:57:12,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:12,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380488641] [2021-11-25 17:57:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:12,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:12,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:12,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380488641] [2021-11-25 17:57:12,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380488641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:12,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:12,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:57:12,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810608064] [2021-11-25 17:57:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:12,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:57:12,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:57:12,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:57:12,534 INFO L87 Difference]: Start difference. First operand 830 states and 2399 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) [2021-11-25 17:57:13,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:13,432 INFO L93 Difference]: Finished difference Result 2150 states and 5804 transitions. [2021-11-25 17:57:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:57:13,432 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 [2021-11-25 17:57:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:13,435 INFO L225 Difference]: With dead ends: 2150 [2021-11-25 17:57:13,435 INFO L226 Difference]: Without dead ends: 2143 [2021-11-25 17:57:13,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:57:13,435 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 344 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:13,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 0 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2021-11-25 17:57:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 846. [2021-11-25 17:57:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.8958579881656803) internal successors, (2447), 845 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2447 transitions. [2021-11-25 17:57:13,454 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2447 transitions. Word has length 36 [2021-11-25 17:57:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:13,454 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2447 transitions. [2021-11-25 17:57:13,454 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) [2021-11-25 17:57:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2447 transitions. [2021-11-25 17:57:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:13,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:13,455 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] [2021-11-25 17:57:13,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-11-25 17:57:13,455 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:13,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1370998286, now seen corresponding path program 193 times [2021-11-25 17:57:13,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:13,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912150554] [2021-11-25 17:57:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:13,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:13,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:13,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912150554] [2021-11-25 17:57:13,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912150554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:13,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:13,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:57:13,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535934284] [2021-11-25 17:57:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:13,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:57:13,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:57:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:57:13,860 INFO L87 Difference]: Start difference. First operand 846 states and 2447 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) [2021-11-25 17:57:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:14,895 INFO L93 Difference]: Finished difference Result 2126 states and 5749 transitions. [2021-11-25 17:57:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:57:14,895 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 [2021-11-25 17:57:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:14,898 INFO L225 Difference]: With dead ends: 2126 [2021-11-25 17:57:14,898 INFO L226 Difference]: Without dead ends: 2119 [2021-11-25 17:57:14,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:57:14,898 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 332 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:14,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 0 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:57:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2021-11-25 17:57:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 776. [2021-11-25 17:57:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 2.8219354838709676) internal successors, (2187), 775 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) [2021-11-25 17:57:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2187 transitions. [2021-11-25 17:57:14,915 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2187 transitions. Word has length 36 [2021-11-25 17:57:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:14,915 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2187 transitions. [2021-11-25 17:57:14,916 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) [2021-11-25 17:57:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2187 transitions. [2021-11-25 17:57:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:14,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:14,917 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] [2021-11-25 17:57:14,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-11-25 17:57:14,917 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1970189446, now seen corresponding path program 194 times [2021-11-25 17:57:14,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:14,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891128943] [2021-11-25 17:57:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:14,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:15,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:15,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891128943] [2021-11-25 17:57:15,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891128943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:15,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:15,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:57:15,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688315571] [2021-11-25 17:57:15,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:15,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:57:15,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:57:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:57:15,460 INFO L87 Difference]: Start difference. First operand 776 states and 2187 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) [2021-11-25 17:57:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:16,459 INFO L93 Difference]: Finished difference Result 915 states and 2408 transitions. [2021-11-25 17:57:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:57:16,460 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 [2021-11-25 17:57:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:16,461 INFO L225 Difference]: With dead ends: 915 [2021-11-25 17:57:16,462 INFO L226 Difference]: Without dead ends: 908 [2021-11-25 17:57:16,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:57:16,462 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 293 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:16,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 0 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-25 17:57:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 776. [2021-11-25 17:57:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 2.8219354838709676) internal successors, (2187), 775 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) [2021-11-25 17:57:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2187 transitions. [2021-11-25 17:57:16,475 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2187 transitions. Word has length 36 [2021-11-25 17:57:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:16,475 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2187 transitions. [2021-11-25 17:57:16,475 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) [2021-11-25 17:57:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2187 transitions. [2021-11-25 17:57:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:16,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:16,476 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] [2021-11-25 17:57:16,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-11-25 17:57:16,476 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 294356524, now seen corresponding path program 195 times [2021-11-25 17:57:16,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643074683] [2021-11-25 17:57:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:16,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:17,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:17,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643074683] [2021-11-25 17:57:17,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643074683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:17,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:17,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:57:17,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823195302] [2021-11-25 17:57:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:17,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:57:17,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:57:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:57:17,117 INFO L87 Difference]: Start difference. First operand 776 states and 2187 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) [2021-11-25 17:57:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:17,949 INFO L93 Difference]: Finished difference Result 915 states and 2412 transitions. [2021-11-25 17:57:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 17:57:17,949 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 [2021-11-25 17:57:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:17,950 INFO L225 Difference]: With dead ends: 915 [2021-11-25 17:57:17,951 INFO L226 Difference]: Without dead ends: 908 [2021-11-25 17:57:17,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:57:17,951 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 312 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:17,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 0 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-25 17:57:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 764. [2021-11-25 17:57:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 2.8296199213630406) internal successors, (2159), 763 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2159 transitions. [2021-11-25 17:57:17,961 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2159 transitions. Word has length 36 [2021-11-25 17:57:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:17,962 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 2159 transitions. [2021-11-25 17:57:17,962 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) [2021-11-25 17:57:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2159 transitions. [2021-11-25 17:57:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:17,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:17,963 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] [2021-11-25 17:57:17,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-11-25 17:57:17,963 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1119870342, now seen corresponding path program 196 times [2021-11-25 17:57:17,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088344762] [2021-11-25 17:57:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:17,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:18,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088344762] [2021-11-25 17:57:18,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088344762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:18,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:18,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 17:57:18,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654327954] [2021-11-25 17:57:18,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:18,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:57:18,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:57:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:57:18,567 INFO L87 Difference]: Start difference. First operand 764 states and 2159 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) [2021-11-25 17:57:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:21,126 INFO L93 Difference]: Finished difference Result 867 states and 2315 transitions. [2021-11-25 17:57:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:57:21,126 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 [2021-11-25 17:57:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:21,128 INFO L225 Difference]: With dead ends: 867 [2021-11-25 17:57:21,128 INFO L226 Difference]: Without dead ends: 860 [2021-11-25 17:57:21,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=359, Invalid=831, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:57:21,128 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 391 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:21,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 0 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:57:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-25 17:57:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 758. [2021-11-25 17:57:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 2.8256274768824308) internal successors, (2139), 757 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2139 transitions. [2021-11-25 17:57:21,155 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2139 transitions. Word has length 36 [2021-11-25 17:57:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:21,155 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 2139 transitions. [2021-11-25 17:57:21,156 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) [2021-11-25 17:57:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2139 transitions. [2021-11-25 17:57:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:21,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:21,157 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] [2021-11-25 17:57:21,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-11-25 17:57:21,157 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2072900826, now seen corresponding path program 197 times [2021-11-25 17:57:21,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:21,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344496533] [2021-11-25 17:57:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:21,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:21,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:21,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344496533] [2021-11-25 17:57:21,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344496533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:21,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:57:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956030857] [2021-11-25 17:57:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:21,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:57:21,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:57:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:57:21,638 INFO L87 Difference]: Start difference. First operand 758 states and 2139 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) [2021-11-25 17:57:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:22,808 INFO L93 Difference]: Finished difference Result 1449 states and 3923 transitions. [2021-11-25 17:57:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:57:22,808 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 [2021-11-25 17:57:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:22,810 INFO L225 Difference]: With dead ends: 1449 [2021-11-25 17:57:22,810 INFO L226 Difference]: Without dead ends: 1434 [2021-11-25 17:57:22,811 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 [2021-11-25 17:57:22,811 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 259 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:22,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-11-25 17:57:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 770. [2021-11-25 17:57:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.8166449934980493) internal successors, (2166), 769 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2166 transitions. [2021-11-25 17:57:22,825 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2166 transitions. Word has length 36 [2021-11-25 17:57:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:22,825 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 2166 transitions. [2021-11-25 17:57:22,825 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) [2021-11-25 17:57:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2166 transitions. [2021-11-25 17:57:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:22,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:22,826 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] [2021-11-25 17:57:22,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-11-25 17:57:22,826 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash -346177018, now seen corresponding path program 198 times [2021-11-25 17:57:22,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:22,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365059746] [2021-11-25 17:57:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:22,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:23,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365059746] [2021-11-25 17:57:23,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365059746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:23,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:23,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:57:23,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198160827] [2021-11-25 17:57:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:23,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:57:23,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:23,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:57:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:57:23,383 INFO L87 Difference]: Start difference. First operand 770 states and 2166 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) [2021-11-25 17:57:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:24,419 INFO L93 Difference]: Finished difference Result 1457 states and 3930 transitions. [2021-11-25 17:57:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:57:24,420 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 [2021-11-25 17:57:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:24,422 INFO L225 Difference]: With dead ends: 1457 [2021-11-25 17:57:24,422 INFO L226 Difference]: Without dead ends: 1450 [2021-11-25 17:57:24,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-11-25 17:57:24,423 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 266 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:24,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 0 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-25 17:57:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 757. [2021-11-25 17:57:24,436 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) [2021-11-25 17:57:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2137 transitions. [2021-11-25 17:57:24,437 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2137 transitions. Word has length 36 [2021-11-25 17:57:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:24,438 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 2137 transitions. [2021-11-25 17:57:24,438 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) [2021-11-25 17:57:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2137 transitions. [2021-11-25 17:57:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:24,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:24,439 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] [2021-11-25 17:57:24,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-11-25 17:57:24,439 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1150055452, now seen corresponding path program 199 times [2021-11-25 17:57:24,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642509289] [2021-11-25 17:57:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:24,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:24,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:24,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642509289] [2021-11-25 17:57:24,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642509289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:24,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:24,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:24,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918185056] [2021-11-25 17:57:24,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:24,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:24,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:24,815 INFO L87 Difference]: Start difference. First operand 757 states and 2137 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) [2021-11-25 17:57:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:25,886 INFO L93 Difference]: Finished difference Result 2073 states and 5398 transitions. [2021-11-25 17:57:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:25,886 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 [2021-11-25 17:57:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:25,889 INFO L225 Difference]: With dead ends: 2073 [2021-11-25 17:57:25,889 INFO L226 Difference]: Without dead ends: 2059 [2021-11-25 17:57:25,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:25,889 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 267 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:25,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 0 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-11-25 17:57:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 774. [2021-11-25 17:57:25,906 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) [2021-11-25 17:57:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2187 transitions. [2021-11-25 17:57:25,908 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2187 transitions. Word has length 36 [2021-11-25 17:57:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:25,908 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 2187 transitions. [2021-11-25 17:57:25,908 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) [2021-11-25 17:57:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2187 transitions. [2021-11-25 17:57:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:25,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:25,909 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] [2021-11-25 17:57:25,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-11-25 17:57:25,909 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 419287794, now seen corresponding path program 200 times [2021-11-25 17:57:25,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:25,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93656109] [2021-11-25 17:57:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:25,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:26,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93656109] [2021-11-25 17:57:26,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93656109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:26,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:26,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:26,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155533282] [2021-11-25 17:57:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:26,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:26,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:26,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:26,322 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) [2021-11-25 17:57:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:27,643 INFO L93 Difference]: Finished difference Result 2217 states and 5720 transitions. [2021-11-25 17:57:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:27,644 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 [2021-11-25 17:57:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:27,647 INFO L225 Difference]: With dead ends: 2217 [2021-11-25 17:57:27,647 INFO L226 Difference]: Without dead ends: 2203 [2021-11-25 17:57:27,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:27,647 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 283 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:27,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 0 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-11-25 17:57:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 792. [2021-11-25 17:57:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 2.8369152970922884) internal successors, (2244), 791 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2244 transitions. [2021-11-25 17:57:27,664 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2244 transitions. Word has length 36 [2021-11-25 17:57:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:27,664 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2244 transitions. [2021-11-25 17:57:27,664 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) [2021-11-25 17:57:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2244 transitions. [2021-11-25 17:57:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:27,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:27,665 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] [2021-11-25 17:57:27,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-11-25 17:57:27,665 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash -509754964, now seen corresponding path program 201 times [2021-11-25 17:57:27,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448112587] [2021-11-25 17:57:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:27,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:28,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:28,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448112587] [2021-11-25 17:57:28,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448112587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:28,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:28,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:57:28,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662111285] [2021-11-25 17:57:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:28,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:57:28,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:57:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:57:28,250 INFO L87 Difference]: Start difference. First operand 792 states and 2244 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) [2021-11-25 17:57:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:30,800 INFO L93 Difference]: Finished difference Result 2181 states and 5682 transitions. [2021-11-25 17:57:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:57:30,800 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 [2021-11-25 17:57:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:30,803 INFO L225 Difference]: With dead ends: 2181 [2021-11-25 17:57:30,803 INFO L226 Difference]: Without dead ends: 2167 [2021-11-25 17:57:30,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-25 17:57:30,803 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 277 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:30,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 0 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:57:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-11-25 17:57:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 790. [2021-11-25 17:57:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.835234474017744) internal successors, (2237), 789 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) [2021-11-25 17:57:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2237 transitions. [2021-11-25 17:57:30,819 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2237 transitions. Word has length 36 [2021-11-25 17:57:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:30,819 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2237 transitions. [2021-11-25 17:57:30,819 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) [2021-11-25 17:57:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2237 transitions. [2021-11-25 17:57:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:30,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:30,820 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] [2021-11-25 17:57:30,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-11-25 17:57:30,820 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash -217370706, now seen corresponding path program 202 times [2021-11-25 17:57:30,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18909829] [2021-11-25 17:57:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:30,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:31,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:31,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18909829] [2021-11-25 17:57:31,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18909829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:31,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:31,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:31,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980559465] [2021-11-25 17:57:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:31,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:31,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:31,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:31,194 INFO L87 Difference]: Start difference. First operand 790 states and 2237 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) [2021-11-25 17:57:32,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:32,488 INFO L93 Difference]: Finished difference Result 2221 states and 5752 transitions. [2021-11-25 17:57:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:32,488 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 [2021-11-25 17:57:32,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:32,491 INFO L225 Difference]: With dead ends: 2221 [2021-11-25 17:57:32,491 INFO L226 Difference]: Without dead ends: 2207 [2021-11-25 17:57:32,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:32,492 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 257 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:32,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 0 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-25 17:57:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 768. [2021-11-25 17:57:32,507 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) [2021-11-25 17:57:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2170 transitions. [2021-11-25 17:57:32,509 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2170 transitions. Word has length 36 [2021-11-25 17:57:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:32,509 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 2170 transitions. [2021-11-25 17:57:32,509 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) [2021-11-25 17:57:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2170 transitions. [2021-11-25 17:57:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:32,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:32,510 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] [2021-11-25 17:57:32,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-11-25 17:57:32,510 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:32,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1190848116, now seen corresponding path program 203 times [2021-11-25 17:57:32,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:32,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780061443] [2021-11-25 17:57:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:32,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:32,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:32,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780061443] [2021-11-25 17:57:32,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780061443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:32,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:32,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:32,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892463099] [2021-11-25 17:57:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:32,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:32,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:32,865 INFO L87 Difference]: Start difference. First operand 768 states and 2170 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) [2021-11-25 17:57:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:33,905 INFO L93 Difference]: Finished difference Result 2185 states and 5664 transitions. [2021-11-25 17:57:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:33,906 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 [2021-11-25 17:57:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:33,908 INFO L225 Difference]: With dead ends: 2185 [2021-11-25 17:57:33,909 INFO L226 Difference]: Without dead ends: 2171 [2021-11-25 17:57:33,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:33,909 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 259 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:33,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-11-25 17:57:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 774. [2021-11-25 17:57:33,924 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) [2021-11-25 17:57:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2187 transitions. [2021-11-25 17:57:33,926 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2187 transitions. Word has length 36 [2021-11-25 17:57:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:33,926 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 2187 transitions. [2021-11-25 17:57:33,926 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) [2021-11-25 17:57:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2187 transitions. [2021-11-25 17:57:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:33,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:33,927 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] [2021-11-25 17:57:33,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-11-25 17:57:33,927 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -640174760, now seen corresponding path program 204 times [2021-11-25 17:57:33,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:33,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670633143] [2021-11-25 17:57:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:33,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:34,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670633143] [2021-11-25 17:57:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670633143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:34,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:34,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:34,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750830425] [2021-11-25 17:57:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:34,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:34,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:34,297 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) [2021-11-25 17:57:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:35,463 INFO L93 Difference]: Finished difference Result 2329 states and 5982 transitions. [2021-11-25 17:57:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:35,463 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 [2021-11-25 17:57:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:35,466 INFO L225 Difference]: With dead ends: 2329 [2021-11-25 17:57:35,466 INFO L226 Difference]: Without dead ends: 2315 [2021-11-25 17:57:35,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:35,467 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 283 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:35,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 0 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-25 17:57:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 792. [2021-11-25 17:57:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 2.8369152970922884) internal successors, (2244), 791 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2244 transitions. [2021-11-25 17:57:35,486 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2244 transitions. Word has length 36 [2021-11-25 17:57:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:35,486 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2244 transitions. [2021-11-25 17:57:35,486 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) [2021-11-25 17:57:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2244 transitions. [2021-11-25 17:57:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:35,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:35,488 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] [2021-11-25 17:57:35,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-11-25 17:57:35,488 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 797319796, now seen corresponding path program 205 times [2021-11-25 17:57:35,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745317900] [2021-11-25 17:57:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:35,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:35,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:35,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745317900] [2021-11-25 17:57:35,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745317900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:35,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:35,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:35,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116406934] [2021-11-25 17:57:35,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:35,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:35,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:35,874 INFO L87 Difference]: Start difference. First operand 792 states and 2244 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) [2021-11-25 17:57:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:37,110 INFO L93 Difference]: Finished difference Result 2297 states and 5918 transitions. [2021-11-25 17:57:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:37,110 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 [2021-11-25 17:57:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:37,113 INFO L225 Difference]: With dead ends: 2297 [2021-11-25 17:57:37,113 INFO L226 Difference]: Without dead ends: 2283 [2021-11-25 17:57:37,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:37,114 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 257 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:37,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 0 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-25 17:57:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 766. [2021-11-25 17:57:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 2.8300653594771243) internal successors, (2165), 765 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) [2021-11-25 17:57:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2165 transitions. [2021-11-25 17:57:37,130 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 2165 transitions. Word has length 36 [2021-11-25 17:57:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:37,130 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 2165 transitions. [2021-11-25 17:57:37,130 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) [2021-11-25 17:57:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 2165 transitions. [2021-11-25 17:57:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:37,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:37,131 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] [2021-11-25 17:57:37,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-11-25 17:57:37,131 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1973051550, now seen corresponding path program 206 times [2021-11-25 17:57:37,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:37,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212793659] [2021-11-25 17:57:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:37,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:37,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212793659] [2021-11-25 17:57:37,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212793659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:37,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:37,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:37,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265177249] [2021-11-25 17:57:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:37,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:37,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:37,521 INFO L87 Difference]: Start difference. First operand 766 states and 2165 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) [2021-11-25 17:57:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:38,650 INFO L93 Difference]: Finished difference Result 2303 states and 6023 transitions. [2021-11-25 17:57:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:38,650 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 [2021-11-25 17:57:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:38,654 INFO L225 Difference]: With dead ends: 2303 [2021-11-25 17:57:38,654 INFO L226 Difference]: Without dead ends: 2289 [2021-11-25 17:57:38,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:38,654 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 240 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:38,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 0 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2021-11-25 17:57:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 781. [2021-11-25 17:57:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 2.83974358974359) internal successors, (2215), 780 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 2215 transitions. [2021-11-25 17:57:38,672 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 2215 transitions. Word has length 36 [2021-11-25 17:57:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:38,672 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 2215 transitions. [2021-11-25 17:57:38,672 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) [2021-11-25 17:57:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 2215 transitions. [2021-11-25 17:57:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:38,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:38,673 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] [2021-11-25 17:57:38,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-11-25 17:57:38,674 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1591148088, now seen corresponding path program 207 times [2021-11-25 17:57:38,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:38,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772199183] [2021-11-25 17:57:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:38,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:39,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772199183] [2021-11-25 17:57:39,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772199183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:39,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:39,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:57:39,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936980710] [2021-11-25 17:57:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:39,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:57:39,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:57:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:57:39,106 INFO L87 Difference]: Start difference. First operand 781 states and 2215 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) [2021-11-25 17:57:45,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:45,303 INFO L93 Difference]: Finished difference Result 2928 states and 7641 transitions. [2021-11-25 17:57:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-25 17:57:45,304 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 [2021-11-25 17:57:45,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:45,307 INFO L225 Difference]: With dead ends: 2928 [2021-11-25 17:57:45,307 INFO L226 Difference]: Without dead ends: 2914 [2021-11-25 17:57:45,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=704, Invalid=2602, Unknown=0, NotChecked=0, Total=3306 [2021-11-25 17:57:45,308 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 384 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:45,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 0 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 17:57:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-11-25 17:57:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 789. [2021-11-25 17:57:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 2.848984771573604) internal successors, (2245), 788 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2245 transitions. [2021-11-25 17:57:45,330 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2245 transitions. Word has length 36 [2021-11-25 17:57:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:45,330 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 2245 transitions. [2021-11-25 17:57:45,331 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) [2021-11-25 17:57:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2245 transitions. [2021-11-25 17:57:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:45,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:45,332 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] [2021-11-25 17:57:45,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-11-25 17:57:45,332 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash 662105330, now seen corresponding path program 208 times [2021-11-25 17:57:45,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571043813] [2021-11-25 17:57:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:45,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:45,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:45,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571043813] [2021-11-25 17:57:45,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571043813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:45,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:45,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:57:45,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65335958] [2021-11-25 17:57:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:45,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:57:45,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:57:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:57:45,752 INFO L87 Difference]: Start difference. First operand 789 states and 2245 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) [2021-11-25 17:57:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:46,825 INFO L93 Difference]: Finished difference Result 2443 states and 6371 transitions. [2021-11-25 17:57:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:57:46,825 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 [2021-11-25 17:57:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:46,829 INFO L225 Difference]: With dead ends: 2443 [2021-11-25 17:57:46,829 INFO L226 Difference]: Without dead ends: 2429 [2021-11-25 17:57:46,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:57:46,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 354 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:46,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 0 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-11-25 17:57:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 805. [2021-11-25 17:57:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.851990049751244) internal successors, (2293), 804 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2293 transitions. [2021-11-25 17:57:46,847 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2293 transitions. Word has length 36 [2021-11-25 17:57:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:46,847 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2293 transitions. [2021-11-25 17:57:46,847 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) [2021-11-25 17:57:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2293 transitions. [2021-11-25 17:57:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:46,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:46,848 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] [2021-11-25 17:57:46,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-11-25 17:57:46,848 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -327437474, now seen corresponding path program 209 times [2021-11-25 17:57:46,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:46,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138597872] [2021-11-25 17:57:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:47,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:47,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138597872] [2021-11-25 17:57:47,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138597872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:47,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:47,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:47,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827288798] [2021-11-25 17:57:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:47,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:47,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:47,177 INFO L87 Difference]: Start difference. First operand 805 states and 2293 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) [2021-11-25 17:57:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:48,193 INFO L93 Difference]: Finished difference Result 2463 states and 6397 transitions. [2021-11-25 17:57:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:48,194 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 [2021-11-25 17:57:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:48,197 INFO L225 Difference]: With dead ends: 2463 [2021-11-25 17:57:48,197 INFO L226 Difference]: Without dead ends: 2449 [2021-11-25 17:57:48,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:48,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:48,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:48,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2021-11-25 17:57:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 775. [2021-11-25 17:57:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.839793281653747) internal successors, (2198), 774 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2198 transitions. [2021-11-25 17:57:48,231 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2198 transitions. Word has length 36 [2021-11-25 17:57:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:48,231 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2198 transitions. [2021-11-25 17:57:48,232 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) [2021-11-25 17:57:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2198 transitions. [2021-11-25 17:57:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:48,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:48,232 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] [2021-11-25 17:57:48,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-11-25 17:57:48,233 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1310372596, now seen corresponding path program 210 times [2021-11-25 17:57:48,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:48,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154400630] [2021-11-25 17:57:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:48,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:48,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154400630] [2021-11-25 17:57:48,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154400630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:48,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:48,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:57:48,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680222279] [2021-11-25 17:57:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:48,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:57:48,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:48,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:57:48,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:57:48,731 INFO L87 Difference]: Start difference. First operand 775 states and 2198 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) [2021-11-25 17:57:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:49,837 INFO L93 Difference]: Finished difference Result 2150 states and 5666 transitions. [2021-11-25 17:57:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:57:49,837 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 [2021-11-25 17:57:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:49,840 INFO L225 Difference]: With dead ends: 2150 [2021-11-25 17:57:49,840 INFO L226 Difference]: Without dead ends: 2136 [2021-11-25 17:57:49,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:57:49,841 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:49,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2021-11-25 17:57:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 778. [2021-11-25 17:57:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.8378378378378377) internal successors, (2205), 777 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2205 transitions. [2021-11-25 17:57:49,860 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2205 transitions. Word has length 36 [2021-11-25 17:57:49,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:49,860 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2205 transitions. [2021-11-25 17:57:49,860 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) [2021-11-25 17:57:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2205 transitions. [2021-11-25 17:57:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:49,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:49,861 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] [2021-11-25 17:57:49,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-11-25 17:57:49,861 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1123839682, now seen corresponding path program 211 times [2021-11-25 17:57:49,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:49,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107249169] [2021-11-25 17:57:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:49,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:50,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:50,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107249169] [2021-11-25 17:57:50,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107249169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:50,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:50,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:50,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777965090] [2021-11-25 17:57:50,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:50,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:50,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:50,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:50,149 INFO L87 Difference]: Start difference. First operand 778 states and 2205 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) [2021-11-25 17:57:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:51,008 INFO L93 Difference]: Finished difference Result 2200 states and 5771 transitions. [2021-11-25 17:57:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:51,009 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 [2021-11-25 17:57:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:51,012 INFO L225 Difference]: With dead ends: 2200 [2021-11-25 17:57:51,012 INFO L226 Difference]: Without dead ends: 2172 [2021-11-25 17:57:51,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:51,012 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:51,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 0 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-11-25 17:57:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 787. [2021-11-25 17:57:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.83206106870229) internal successors, (2226), 786 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2226 transitions. [2021-11-25 17:57:51,050 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2226 transitions. Word has length 36 [2021-11-25 17:57:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:51,050 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2226 transitions. [2021-11-25 17:57:51,051 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) [2021-11-25 17:57:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2226 transitions. [2021-11-25 17:57:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:51,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:51,052 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] [2021-11-25 17:57:51,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-11-25 17:57:51,052 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -365460326, now seen corresponding path program 212 times [2021-11-25 17:57:51,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544139500] [2021-11-25 17:57:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:51,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:51,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544139500] [2021-11-25 17:57:51,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544139500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:51,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:51,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:51,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400074226] [2021-11-25 17:57:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:51,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:51,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:51,426 INFO L87 Difference]: Start difference. First operand 787 states and 2226 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) [2021-11-25 17:57:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:52,355 INFO L93 Difference]: Finished difference Result 2195 states and 5757 transitions. [2021-11-25 17:57:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:52,356 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 [2021-11-25 17:57:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:52,359 INFO L225 Difference]: With dead ends: 2195 [2021-11-25 17:57:52,359 INFO L226 Difference]: Without dead ends: 2181 [2021-11-25 17:57:52,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:57:52,359 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:52,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-11-25 17:57:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 775. [2021-11-25 17:57:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.839793281653747) internal successors, (2198), 774 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2198 transitions. [2021-11-25 17:57:52,377 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2198 transitions. Word has length 36 [2021-11-25 17:57:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:52,377 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2198 transitions. [2021-11-25 17:57:52,377 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) [2021-11-25 17:57:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2198 transitions. [2021-11-25 17:57:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:52,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:52,378 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] [2021-11-25 17:57:52,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-11-25 17:57:52,378 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1992166696, now seen corresponding path program 213 times [2021-11-25 17:57:52,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:52,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875758447] [2021-11-25 17:57:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:52,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:52,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:52,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875758447] [2021-11-25 17:57:52,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875758447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:52,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:52,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:57:52,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278087864] [2021-11-25 17:57:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:52,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:57:52,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:57:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:57:52,752 INFO L87 Difference]: Start difference. First operand 775 states and 2198 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) [2021-11-25 17:57:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:54,226 INFO L93 Difference]: Finished difference Result 2460 states and 6432 transitions. [2021-11-25 17:57:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:57:54,227 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 [2021-11-25 17:57:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:54,230 INFO L225 Difference]: With dead ends: 2460 [2021-11-25 17:57:54,230 INFO L226 Difference]: Without dead ends: 2432 [2021-11-25 17:57:54,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:57:54,230 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 326 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:54,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 0 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:57:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-11-25 17:57:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 787. [2021-11-25 17:57:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.8587786259541983) internal successors, (2247), 786 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2247 transitions. [2021-11-25 17:57:54,251 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2247 transitions. Word has length 36 [2021-11-25 17:57:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:54,251 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2247 transitions. [2021-11-25 17:57:54,251 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) [2021-11-25 17:57:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2247 transitions. [2021-11-25 17:57:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:54,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:54,252 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] [2021-11-25 17:57:54,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-11-25 17:57:54,252 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1544421244, now seen corresponding path program 214 times [2021-11-25 17:57:54,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:54,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161768971] [2021-11-25 17:57:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:54,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:54,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:54,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161768971] [2021-11-25 17:57:54,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161768971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:54,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:54,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:54,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469175070] [2021-11-25 17:57:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:54,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:54,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:54,559 INFO L87 Difference]: Start difference. First operand 787 states and 2247 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) [2021-11-25 17:57:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:55,376 INFO L93 Difference]: Finished difference Result 2666 states and 7068 transitions. [2021-11-25 17:57:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:55,377 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 [2021-11-25 17:57:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:55,381 INFO L225 Difference]: With dead ends: 2666 [2021-11-25 17:57:55,381 INFO L226 Difference]: Without dead ends: 2652 [2021-11-25 17:57:55,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:57:55,381 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:55,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-11-25 17:57:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 820. [2021-11-25 17:57:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.896214896214896) internal successors, (2372), 819 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) [2021-11-25 17:57:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2372 transitions. [2021-11-25 17:57:55,404 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2372 transitions. Word has length 36 [2021-11-25 17:57:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:55,404 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2372 transitions. [2021-11-25 17:57:55,404 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) [2021-11-25 17:57:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2372 transitions. [2021-11-25 17:57:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:55,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:55,405 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] [2021-11-25 17:57:55,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-11-25 17:57:55,405 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1038355026, now seen corresponding path program 215 times [2021-11-25 17:57:55,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:55,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941915113] [2021-11-25 17:57:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:55,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:55,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:55,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941915113] [2021-11-25 17:57:55,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941915113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:55,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:55,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:57:55,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217173167] [2021-11-25 17:57:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:55,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:57:55,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:57:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:57:55,660 INFO L87 Difference]: Start difference. First operand 820 states and 2372 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) [2021-11-25 17:57:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:56,702 INFO L93 Difference]: Finished difference Result 2627 states and 6993 transitions. [2021-11-25 17:57:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:57:56,703 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 [2021-11-25 17:57:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:56,706 INFO L225 Difference]: With dead ends: 2627 [2021-11-25 17:57:56,706 INFO L226 Difference]: Without dead ends: 2599 [2021-11-25 17:57:56,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:57:56,707 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:56,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-11-25 17:57:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 835. [2021-11-25 17:57:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 2.8908872901678655) internal successors, (2411), 834 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 2411 transitions. [2021-11-25 17:57:56,726 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 2411 transitions. Word has length 36 [2021-11-25 17:57:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:56,727 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 2411 transitions. [2021-11-25 17:57:56,727 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) [2021-11-25 17:57:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 2411 transitions. [2021-11-25 17:57:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:56,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:56,728 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] [2021-11-25 17:57:56,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-11-25 17:57:56,728 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:56,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1159090636, now seen corresponding path program 216 times [2021-11-25 17:57:56,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:56,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77130986] [2021-11-25 17:57:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:56,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:56,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:56,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77130986] [2021-11-25 17:57:56,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77130986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:56,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:56,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:56,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345827434] [2021-11-25 17:57:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:56,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:56,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:56,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:56,979 INFO L87 Difference]: Start difference. First operand 835 states and 2411 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) [2021-11-25 17:57:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:57,986 INFO L93 Difference]: Finished difference Result 2644 states and 7022 transitions. [2021-11-25 17:57:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:57,986 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 [2021-11-25 17:57:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:57,990 INFO L225 Difference]: With dead ends: 2644 [2021-11-25 17:57:57,990 INFO L226 Difference]: Without dead ends: 2630 [2021-11-25 17:57:57,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:57:57,990 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:57,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-11-25 17:57:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 820. [2021-11-25 17:57:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.896214896214896) internal successors, (2372), 819 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) [2021-11-25 17:57:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2372 transitions. [2021-11-25 17:57:58,011 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2372 transitions. Word has length 36 [2021-11-25 17:57:58,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:58,011 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2372 transitions. [2021-11-25 17:57:58,011 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) [2021-11-25 17:57:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2372 transitions. [2021-11-25 17:57:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:58,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:58,012 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] [2021-11-25 17:57:58,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-11-25 17:57:58,012 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash -851430476, now seen corresponding path program 217 times [2021-11-25 17:57:58,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:58,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808262307] [2021-11-25 17:57:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:58,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:58,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:58,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808262307] [2021-11-25 17:57:58,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808262307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:58,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:58,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:58,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014893265] [2021-11-25 17:57:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:58,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:58,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:58,357 INFO L87 Difference]: Start difference. First operand 820 states and 2372 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) [2021-11-25 17:57:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:59,183 INFO L93 Difference]: Finished difference Result 2745 states and 7232 transitions. [2021-11-25 17:57:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:59,184 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 [2021-11-25 17:57:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:59,187 INFO L225 Difference]: With dead ends: 2745 [2021-11-25 17:57:59,187 INFO L226 Difference]: Without dead ends: 2731 [2021-11-25 17:57:59,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:57:59,188 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:59,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-11-25 17:57:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 838. [2021-11-25 17:57:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 2.902031063321386) internal successors, (2429), 837 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 2429 transitions. [2021-11-25 17:57:59,208 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 2429 transitions. Word has length 36 [2021-11-25 17:57:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:59,208 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 2429 transitions. [2021-11-25 17:57:59,208 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) [2021-11-25 17:57:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 2429 transitions. [2021-11-25 17:57:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:57:59,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:59,209 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] [2021-11-25 17:57:59,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-11-25 17:57:59,210 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:57:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1780473234, now seen corresponding path program 218 times [2021-11-25 17:57:59,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333908873] [2021-11-25 17:57:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:59,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:57:59,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:59,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333908873] [2021-11-25 17:57:59,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333908873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:59,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:59,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:57:59,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775136460] [2021-11-25 17:57:59,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:59,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:57:59,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:57:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:57:59,464 INFO L87 Difference]: Start difference. First operand 838 states and 2429 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) [2021-11-25 17:58:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:00,337 INFO L93 Difference]: Finished difference Result 2737 states and 7218 transitions. [2021-11-25 17:58:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:00,338 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 [2021-11-25 17:58:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:00,342 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 17:58:00,342 INFO L226 Difference]: Without dead ends: 2723 [2021-11-25 17:58:00,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:58:00,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 240 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:00,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 0 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-11-25 17:58:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 817. [2021-11-25 17:58:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.8872549019607843) internal successors, (2356), 816 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2356 transitions. [2021-11-25 17:58:00,365 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2356 transitions. Word has length 36 [2021-11-25 17:58:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:00,365 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2356 transitions. [2021-11-25 17:58:00,365 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) [2021-11-25 17:58:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2356 transitions. [2021-11-25 17:58:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:00,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:00,366 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] [2021-11-25 17:58:00,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-11-25 17:58:00,366 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:00,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1649410878, now seen corresponding path program 219 times [2021-11-25 17:58:00,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:00,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447273545] [2021-11-25 17:58:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:00,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:00,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:00,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447273545] [2021-11-25 17:58:00,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447273545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:00,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:00,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:00,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462406602] [2021-11-25 17:58:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:00,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:00,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:00,972 INFO L87 Difference]: Start difference. First operand 817 states and 2356 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) [2021-11-25 17:58:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:01,825 INFO L93 Difference]: Finished difference Result 2621 states and 6955 transitions. [2021-11-25 17:58:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:01,825 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 [2021-11-25 17:58:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:01,829 INFO L225 Difference]: With dead ends: 2621 [2021-11-25 17:58:01,829 INFO L226 Difference]: Without dead ends: 2593 [2021-11-25 17:58:01,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:58:01,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 224 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:01,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 0 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-25 17:58:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 766. [2021-11-25 17:58:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 2.8300653594771243) internal successors, (2165), 765 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) [2021-11-25 17:58:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2165 transitions. [2021-11-25 17:58:01,849 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 2165 transitions. Word has length 36 [2021-11-25 17:58:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:01,849 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 2165 transitions. [2021-11-25 17:58:01,849 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) [2021-11-25 17:58:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 2165 transitions. [2021-11-25 17:58:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:01,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:01,850 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] [2021-11-25 17:58:01,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-11-25 17:58:01,850 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1045925822, now seen corresponding path program 220 times [2021-11-25 17:58:01,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:01,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215121104] [2021-11-25 17:58:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:01,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:02,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:02,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215121104] [2021-11-25 17:58:02,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215121104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:02,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:02,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:02,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775565705] [2021-11-25 17:58:02,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:02,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:02,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:02,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:02,107 INFO L87 Difference]: Start difference. First operand 766 states and 2165 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) [2021-11-25 17:58:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:02,959 INFO L93 Difference]: Finished difference Result 2602 states and 6906 transitions. [2021-11-25 17:58:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:02,959 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 [2021-11-25 17:58:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:02,963 INFO L225 Difference]: With dead ends: 2602 [2021-11-25 17:58:02,963 INFO L226 Difference]: Without dead ends: 2588 [2021-11-25 17:58:02,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:02,963 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 231 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:02,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 0 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-11-25 17:58:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 780. [2021-11-25 17:58:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.838254172015404) internal successors, (2211), 779 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2211 transitions. [2021-11-25 17:58:02,983 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2211 transitions. Word has length 36 [2021-11-25 17:58:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:02,983 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 2211 transitions. [2021-11-25 17:58:02,983 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) [2021-11-25 17:58:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2211 transitions. [2021-11-25 17:58:02,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:02,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:02,984 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] [2021-11-25 17:58:02,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-11-25 17:58:02,984 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1156190024, now seen corresponding path program 221 times [2021-11-25 17:58:02,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:02,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678490248] [2021-11-25 17:58:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:02,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:03,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:03,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678490248] [2021-11-25 17:58:03,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678490248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:03,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:03,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:03,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15673175] [2021-11-25 17:58:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:03,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:03,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:03,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:03,295 INFO L87 Difference]: Start difference. First operand 780 states and 2211 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) [2021-11-25 17:58:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:05,405 INFO L93 Difference]: Finished difference Result 2791 states and 7361 transitions. [2021-11-25 17:58:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 17:58:05,405 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 [2021-11-25 17:58:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:05,409 INFO L225 Difference]: With dead ends: 2791 [2021-11-25 17:58:05,409 INFO L226 Difference]: Without dead ends: 2777 [2021-11-25 17:58:05,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=338, Invalid=852, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:58:05,409 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 303 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:05,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 0 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:58:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2021-11-25 17:58:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 790. [2021-11-25 17:58:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.835234474017744) internal successors, (2237), 789 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) [2021-11-25 17:58:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2237 transitions. [2021-11-25 17:58:05,431 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2237 transitions. Word has length 36 [2021-11-25 17:58:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:05,432 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2237 transitions. [2021-11-25 17:58:05,432 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) [2021-11-25 17:58:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2237 transitions. [2021-11-25 17:58:05,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:05,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:05,433 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] [2021-11-25 17:58:05,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-11-25 17:58:05,433 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash 140732902, now seen corresponding path program 222 times [2021-11-25 17:58:05,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:05,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461191955] [2021-11-25 17:58:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:05,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:05,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461191955] [2021-11-25 17:58:05,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461191955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:05,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:05,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:05,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559634339] [2021-11-25 17:58:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:05,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:05,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:05,768 INFO L87 Difference]: Start difference. First operand 790 states and 2237 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) [2021-11-25 17:58:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:06,593 INFO L93 Difference]: Finished difference Result 2636 states and 7001 transitions. [2021-11-25 17:58:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:06,593 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 [2021-11-25 17:58:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:06,597 INFO L225 Difference]: With dead ends: 2636 [2021-11-25 17:58:06,597 INFO L226 Difference]: Without dead ends: 2608 [2021-11-25 17:58:06,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:06,597 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:06,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-11-25 17:58:06,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 795. [2021-11-25 17:58:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.8337531486146097) internal successors, (2250), 794 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) [2021-11-25 17:58:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2250 transitions. [2021-11-25 17:58:06,619 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2250 transitions. Word has length 36 [2021-11-25 17:58:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2250 transitions. [2021-11-25 17:58:06,619 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) [2021-11-25 17:58:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2250 transitions. [2021-11-25 17:58:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:06,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:06,620 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] [2021-11-25 17:58:06,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-11-25 17:58:06,620 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash -721114858, now seen corresponding path program 223 times [2021-11-25 17:58:06,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:06,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119746722] [2021-11-25 17:58:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:06,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:06,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:06,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119746722] [2021-11-25 17:58:06,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119746722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:06,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:06,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:06,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170708942] [2021-11-25 17:58:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:06,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:06,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:06,888 INFO L87 Difference]: Start difference. First operand 795 states and 2250 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) [2021-11-25 17:58:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:07,675 INFO L93 Difference]: Finished difference Result 2661 states and 7044 transitions. [2021-11-25 17:58:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:07,675 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 [2021-11-25 17:58:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:07,679 INFO L225 Difference]: With dead ends: 2661 [2021-11-25 17:58:07,679 INFO L226 Difference]: Without dead ends: 2647 [2021-11-25 17:58:07,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:07,680 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:07,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-11-25 17:58:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 775. [2021-11-25 17:58:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.839793281653747) internal successors, (2198), 774 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2198 transitions. [2021-11-25 17:58:07,702 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2198 transitions. Word has length 36 [2021-11-25 17:58:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:07,702 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2198 transitions. [2021-11-25 17:58:07,702 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) [2021-11-25 17:58:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2198 transitions. [2021-11-25 17:58:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:07,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:07,703 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] [2021-11-25 17:58:07,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-11-25 17:58:07,703 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash -9800422, now seen corresponding path program 224 times [2021-11-25 17:58:07,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:07,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32328240] [2021-11-25 17:58:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:07,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:08,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:08,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32328240] [2021-11-25 17:58:08,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32328240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:08,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:08,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:08,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485552527] [2021-11-25 17:58:08,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:08,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:08,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:08,035 INFO L87 Difference]: Start difference. First operand 775 states and 2198 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) [2021-11-25 17:58:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:09,237 INFO L93 Difference]: Finished difference Result 2825 states and 7429 transitions. [2021-11-25 17:58:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:09,238 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 [2021-11-25 17:58:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:09,242 INFO L225 Difference]: With dead ends: 2825 [2021-11-25 17:58:09,242 INFO L226 Difference]: Without dead ends: 2811 [2021-11-25 17:58:09,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:09,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 239 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:09,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 0 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-25 17:58:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 781. [2021-11-25 17:58:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 2.83974358974359) internal successors, (2215), 780 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 2215 transitions. [2021-11-25 17:58:09,265 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 2215 transitions. Word has length 36 [2021-11-25 17:58:09,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:09,265 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 2215 transitions. [2021-11-25 17:58:09,265 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) [2021-11-25 17:58:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 2215 transitions. [2021-11-25 17:58:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:09,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:09,266 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] [2021-11-25 17:58:09,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-11-25 17:58:09,267 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1840823298, now seen corresponding path program 225 times [2021-11-25 17:58:09,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101003439] [2021-11-25 17:58:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:09,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:09,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101003439] [2021-11-25 17:58:09,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101003439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:09,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:09,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:09,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152127622] [2021-11-25 17:58:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:09,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:09,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:09,691 INFO L87 Difference]: Start difference. First operand 781 states and 2215 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) [2021-11-25 17:58:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:13,445 INFO L93 Difference]: Finished difference Result 2952 states and 7761 transitions. [2021-11-25 17:58:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 17:58:13,445 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 [2021-11-25 17:58:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:13,450 INFO L225 Difference]: With dead ends: 2952 [2021-11-25 17:58:13,450 INFO L226 Difference]: Without dead ends: 2938 [2021-11-25 17:58:13,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=393, Invalid=1089, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 17:58:13,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:13,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:58:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-11-25 17:58:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 787. [2021-11-25 17:58:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.8447837150127224) internal successors, (2236), 786 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) [2021-11-25 17:58:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2236 transitions. [2021-11-25 17:58:13,477 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2236 transitions. Word has length 36 [2021-11-25 17:58:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:13,477 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2236 transitions. [2021-11-25 17:58:13,477 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) [2021-11-25 17:58:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2236 transitions. [2021-11-25 17:58:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:13,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:13,478 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] [2021-11-25 17:58:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-11-25 17:58:13,478 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash -403328742, now seen corresponding path program 226 times [2021-11-25 17:58:13,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:13,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813395935] [2021-11-25 17:58:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:13,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:13,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:13,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813395935] [2021-11-25 17:58:13,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813395935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:13,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:13,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:13,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506480189] [2021-11-25 17:58:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:13,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:13,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:13,812 INFO L87 Difference]: Start difference. First operand 787 states and 2236 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) [2021-11-25 17:58:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:14,874 INFO L93 Difference]: Finished difference Result 2909 states and 7655 transitions. [2021-11-25 17:58:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:14,874 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 [2021-11-25 17:58:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:14,878 INFO L225 Difference]: With dead ends: 2909 [2021-11-25 17:58:14,878 INFO L226 Difference]: Without dead ends: 2895 [2021-11-25 17:58:14,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:14,878 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 257 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:14,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 0 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2021-11-25 17:58:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 805. [2021-11-25 17:58:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.851990049751244) internal successors, (2293), 804 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2293 transitions. [2021-11-25 17:58:14,898 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2293 transitions. Word has length 36 [2021-11-25 17:58:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:14,898 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2293 transitions. [2021-11-25 17:58:14,898 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) [2021-11-25 17:58:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2293 transitions. [2021-11-25 17:58:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:14,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:14,899 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] [2021-11-25 17:58:14,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-11-25 17:58:14,899 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1332371500, now seen corresponding path program 227 times [2021-11-25 17:58:14,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:14,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448223046] [2021-11-25 17:58:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:14,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:15,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448223046] [2021-11-25 17:58:15,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448223046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:15,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:15,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:15,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138229305] [2021-11-25 17:58:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:15,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:15,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:15,270 INFO L87 Difference]: Start difference. First operand 805 states and 2293 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) [2021-11-25 17:58:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:16,192 INFO L93 Difference]: Finished difference Result 2941 states and 7707 transitions. [2021-11-25 17:58:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:16,192 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 [2021-11-25 17:58:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:16,196 INFO L225 Difference]: With dead ends: 2941 [2021-11-25 17:58:16,197 INFO L226 Difference]: Without dead ends: 2927 [2021-11-25 17:58:16,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:16,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 255 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:16,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 0 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2021-11-25 17:58:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 775. [2021-11-25 17:58:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.839793281653747) internal successors, (2198), 774 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2198 transitions. [2021-11-25 17:58:16,219 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2198 transitions. Word has length 36 [2021-11-25 17:58:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:16,219 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2198 transitions. [2021-11-25 17:58:16,219 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) [2021-11-25 17:58:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2198 transitions. [2021-11-25 17:58:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:16,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:16,220 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] [2021-11-25 17:58:16,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-11-25 17:58:16,220 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2083324332, now seen corresponding path program 228 times [2021-11-25 17:58:16,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:16,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45906520] [2021-11-25 17:58:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:16,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:16,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:16,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45906520] [2021-11-25 17:58:16,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45906520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:16,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:16,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:58:16,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700296377] [2021-11-25 17:58:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:16,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:16,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:16,577 INFO L87 Difference]: Start difference. First operand 775 states and 2198 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) [2021-11-25 17:58:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:17,678 INFO L93 Difference]: Finished difference Result 3027 states and 8018 transitions. [2021-11-25 17:58:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:58:17,678 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 [2021-11-25 17:58:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:17,682 INFO L225 Difference]: With dead ends: 3027 [2021-11-25 17:58:17,682 INFO L226 Difference]: Without dead ends: 3013 [2021-11-25 17:58:17,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:17,683 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 289 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:17,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 0 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2021-11-25 17:58:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 817. [2021-11-25 17:58:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.8799019607843137) internal successors, (2350), 816 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) [2021-11-25 17:58:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2350 transitions. [2021-11-25 17:58:17,706 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2350 transitions. Word has length 36 [2021-11-25 17:58:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:17,706 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 2350 transitions. [2021-11-25 17:58:17,706 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) [2021-11-25 17:58:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2350 transitions. [2021-11-25 17:58:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:17,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:17,707 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] [2021-11-25 17:58:17,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-11-25 17:58:17,708 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:17,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash -786401406, now seen corresponding path program 229 times [2021-11-25 17:58:17,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:17,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973675833] [2021-11-25 17:58:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:17,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:18,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973675833] [2021-11-25 17:58:18,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973675833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:18,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:18,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:18,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85820081] [2021-11-25 17:58:18,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:18,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:18,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:18,041 INFO L87 Difference]: Start difference. First operand 817 states and 2350 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) [2021-11-25 17:58:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:19,564 INFO L93 Difference]: Finished difference Result 2959 states and 7883 transitions. [2021-11-25 17:58:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:58:19,564 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 [2021-11-25 17:58:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:19,568 INFO L225 Difference]: With dead ends: 2959 [2021-11-25 17:58:19,568 INFO L226 Difference]: Without dead ends: 2931 [2021-11-25 17:58:19,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:58:19,569 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 277 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:19,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 0 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2021-11-25 17:58:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 823. [2021-11-25 17:58:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.8905109489051095) internal successors, (2376), 822 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2376 transitions. [2021-11-25 17:58:19,593 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2376 transitions. Word has length 36 [2021-11-25 17:58:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:19,593 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 2376 transitions. [2021-11-25 17:58:19,594 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) [2021-11-25 17:58:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2376 transitions. [2021-11-25 17:58:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:19,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:19,595 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] [2021-11-25 17:58:19,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-11-25 17:58:19,595 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash -562943404, now seen corresponding path program 230 times [2021-11-25 17:58:19,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:19,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963035393] [2021-11-25 17:58:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:19,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:19,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:19,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963035393] [2021-11-25 17:58:19,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963035393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:19,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:19,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:19,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388451112] [2021-11-25 17:58:19,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:19,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:19,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:19,830 INFO L87 Difference]: Start difference. First operand 823 states and 2376 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) [2021-11-25 17:58:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:20,623 INFO L93 Difference]: Finished difference Result 3074 states and 8154 transitions. [2021-11-25 17:58:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:20,623 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 [2021-11-25 17:58:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:20,627 INFO L225 Difference]: With dead ends: 3074 [2021-11-25 17:58:20,627 INFO L226 Difference]: Without dead ends: 3060 [2021-11-25 17:58:20,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:58:20,628 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:20,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2021-11-25 17:58:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 841. [2021-11-25 17:58:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 2.8964285714285714) internal successors, (2433), 840 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) [2021-11-25 17:58:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2433 transitions. [2021-11-25 17:58:20,655 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2433 transitions. Word has length 36 [2021-11-25 17:58:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:20,655 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 2433 transitions. [2021-11-25 17:58:20,655 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) [2021-11-25 17:58:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2433 transitions. [2021-11-25 17:58:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:20,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:20,656 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] [2021-11-25 17:58:20,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-11-25 17:58:20,656 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash 782220180, now seen corresponding path program 231 times [2021-11-25 17:58:20,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:20,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783338469] [2021-11-25 17:58:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:20,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:21,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:21,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783338469] [2021-11-25 17:58:21,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783338469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:21,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:21,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:21,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963751769] [2021-11-25 17:58:21,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:21,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:21,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:21,176 INFO L87 Difference]: Start difference. First operand 841 states and 2433 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) [2021-11-25 17:58:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:25,592 INFO L93 Difference]: Finished difference Result 3397 states and 9172 transitions. [2021-11-25 17:58:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-25 17:58:25,593 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 [2021-11-25 17:58:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:25,599 INFO L225 Difference]: With dead ends: 3397 [2021-11-25 17:58:25,599 INFO L226 Difference]: Without dead ends: 3383 [2021-11-25 17:58:25,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=616, Invalid=2140, Unknown=0, NotChecked=0, Total=2756 [2021-11-25 17:58:25,599 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 275 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:25,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 0 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:58:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2021-11-25 17:58:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 841. [2021-11-25 17:58:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 2.8964285714285714) internal successors, (2433), 840 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) [2021-11-25 17:58:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2433 transitions. [2021-11-25 17:58:25,626 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2433 transitions. Word has length 36 [2021-11-25 17:58:25,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:25,626 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 2433 transitions. [2021-11-25 17:58:25,626 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) [2021-11-25 17:58:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2433 transitions. [2021-11-25 17:58:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:25,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:25,627 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] [2021-11-25 17:58:25,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-11-25 17:58:25,627 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash 826256870, now seen corresponding path program 232 times [2021-11-25 17:58:25,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17220237] [2021-11-25 17:58:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:25,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:26,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:26,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17220237] [2021-11-25 17:58:26,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17220237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:26,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:26,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:26,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158928675] [2021-11-25 17:58:26,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:26,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:26,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:26,102 INFO L87 Difference]: Start difference. First operand 841 states and 2433 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) [2021-11-25 17:58:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:27,038 INFO L93 Difference]: Finished difference Result 2970 states and 7947 transitions. [2021-11-25 17:58:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:27,038 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 [2021-11-25 17:58:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:27,043 INFO L225 Difference]: With dead ends: 2970 [2021-11-25 17:58:27,043 INFO L226 Difference]: Without dead ends: 2942 [2021-11-25 17:58:27,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:58:27,043 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 267 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:27,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 0 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-11-25 17:58:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 850. [2021-11-25 17:58:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 2.8904593639575973) internal successors, (2454), 849 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 2454 transitions. [2021-11-25 17:58:27,068 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 2454 transitions. Word has length 36 [2021-11-25 17:58:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:27,068 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 2454 transitions. [2021-11-25 17:58:27,068 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) [2021-11-25 17:58:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 2454 transitions. [2021-11-25 17:58:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:27,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:27,069 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] [2021-11-25 17:58:27,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-11-25 17:58:27,069 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:27,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1584636226, now seen corresponding path program 233 times [2021-11-25 17:58:27,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:27,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051551848] [2021-11-25 17:58:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:27,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:27,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:27,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051551848] [2021-11-25 17:58:27,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051551848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:27,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:27,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:27,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96375923] [2021-11-25 17:58:27,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:27,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:27,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:27,415 INFO L87 Difference]: Start difference. First operand 850 states and 2454 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) [2021-11-25 17:58:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:29,401 INFO L93 Difference]: Finished difference Result 2964 states and 7929 transitions. [2021-11-25 17:58:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 17:58:29,401 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 [2021-11-25 17:58:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:29,405 INFO L225 Difference]: With dead ends: 2964 [2021-11-25 17:58:29,406 INFO L226 Difference]: Without dead ends: 2950 [2021-11-25 17:58:29,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:58:29,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:29,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:58:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-11-25 17:58:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 853. [2021-11-25 17:58:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.89906103286385) internal successors, (2470), 852 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2470 transitions. [2021-11-25 17:58:29,435 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2470 transitions. Word has length 36 [2021-11-25 17:58:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:29,435 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 2470 transitions. [2021-11-25 17:58:29,435 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) [2021-11-25 17:58:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2470 transitions. [2021-11-25 17:58:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:29,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:29,436 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] [2021-11-25 17:58:29,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-11-25 17:58:29,436 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2090702444, now seen corresponding path program 234 times [2021-11-25 17:58:29,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:29,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722940289] [2021-11-25 17:58:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:29,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:29,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722940289] [2021-11-25 17:58:29,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722940289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:29,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:29,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:29,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896767996] [2021-11-25 17:58:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:29,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:29,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:29,776 INFO L87 Difference]: Start difference. First operand 853 states and 2470 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) [2021-11-25 17:58:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:31,092 INFO L93 Difference]: Finished difference Result 2885 states and 7741 transitions. [2021-11-25 17:58:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:58:31,092 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 [2021-11-25 17:58:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:31,096 INFO L225 Difference]: With dead ends: 2885 [2021-11-25 17:58:31,096 INFO L226 Difference]: Without dead ends: 2857 [2021-11-25 17:58:31,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:58:31,096 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 283 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:31,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 0 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-11-25 17:58:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 853. [2021-11-25 17:58:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.89906103286385) internal successors, (2470), 852 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2470 transitions. [2021-11-25 17:58:31,119 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2470 transitions. Word has length 36 [2021-11-25 17:58:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:31,119 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 2470 transitions. [2021-11-25 17:58:31,119 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) [2021-11-25 17:58:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2470 transitions. [2021-11-25 17:58:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:31,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:31,120 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] [2021-11-25 17:58:31,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-11-25 17:58:31,120 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2017340302, now seen corresponding path program 235 times [2021-11-25 17:58:31,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:31,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413352238] [2021-11-25 17:58:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:31,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:31,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:31,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413352238] [2021-11-25 17:58:31,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413352238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:31,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:31,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:31,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478618169] [2021-11-25 17:58:31,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:31,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:31,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:31,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:31,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:31,586 INFO L87 Difference]: Start difference. First operand 853 states and 2470 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) [2021-11-25 17:58:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:33,835 INFO L93 Difference]: Finished difference Result 3135 states and 8450 transitions. [2021-11-25 17:58:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-25 17:58:33,836 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 [2021-11-25 17:58:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:33,840 INFO L225 Difference]: With dead ends: 3135 [2021-11-25 17:58:33,840 INFO L226 Difference]: Without dead ends: 3121 [2021-11-25 17:58:33,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2021-11-25 17:58:33,841 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:33,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:58:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-11-25 17:58:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 841. [2021-11-25 17:58:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 2.875) internal successors, (2415), 840 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2415 transitions. [2021-11-25 17:58:33,870 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2415 transitions. Word has length 36 [2021-11-25 17:58:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:33,870 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 2415 transitions. [2021-11-25 17:58:33,870 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) [2021-11-25 17:58:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2415 transitions. [2021-11-25 17:58:33,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:33,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:33,871 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] [2021-11-25 17:58:33,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-11-25 17:58:33,871 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1464421786, now seen corresponding path program 236 times [2021-11-25 17:58:33,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:33,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059107475] [2021-11-25 17:58:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:33,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:34,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:34,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059107475] [2021-11-25 17:58:34,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059107475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:34,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:34,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:34,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893208934] [2021-11-25 17:58:34,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:34,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:34,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:34,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:34,258 INFO L87 Difference]: Start difference. First operand 841 states and 2415 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) [2021-11-25 17:58:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:35,768 INFO L93 Difference]: Finished difference Result 3168 states and 8474 transitions. [2021-11-25 17:58:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:58:35,768 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 [2021-11-25 17:58:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:35,773 INFO L225 Difference]: With dead ends: 3168 [2021-11-25 17:58:35,773 INFO L226 Difference]: Without dead ends: 3140 [2021-11-25 17:58:35,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:58:35,773 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:35,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-11-25 17:58:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 831. [2021-11-25 17:58:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.878313253012048) internal successors, (2389), 830 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2389 transitions. [2021-11-25 17:58:35,796 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2389 transitions. Word has length 36 [2021-11-25 17:58:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:35,796 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2389 transitions. [2021-11-25 17:58:35,796 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) [2021-11-25 17:58:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2389 transitions. [2021-11-25 17:58:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:35,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:35,797 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] [2021-11-25 17:58:35,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-11-25 17:58:35,797 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:35,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1261923924, now seen corresponding path program 237 times [2021-11-25 17:58:35,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:35,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855887748] [2021-11-25 17:58:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:35,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:36,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855887748] [2021-11-25 17:58:36,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855887748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:36,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:36,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 17:58:36,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741416008] [2021-11-25 17:58:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:58:36,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:58:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:58:36,196 INFO L87 Difference]: Start difference. First operand 831 states and 2389 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) [2021-11-25 17:58:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:37,083 INFO L93 Difference]: Finished difference Result 3070 states and 8164 transitions. [2021-11-25 17:58:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:37,083 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 [2021-11-25 17:58:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:37,087 INFO L225 Difference]: With dead ends: 3070 [2021-11-25 17:58:37,087 INFO L226 Difference]: Without dead ends: 3056 [2021-11-25 17:58:37,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:58:37,088 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 255 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:37,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 0 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2021-11-25 17:58:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 813. [2021-11-25 17:58:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 2.87192118226601) internal successors, (2332), 812 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 2332 transitions. [2021-11-25 17:58:37,129 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 2332 transitions. Word has length 36 [2021-11-25 17:58:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:37,129 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 2332 transitions. [2021-11-25 17:58:37,129 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) [2021-11-25 17:58:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 2332 transitions. [2021-11-25 17:58:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:37,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:37,130 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] [2021-11-25 17:58:37,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-11-25 17:58:37,130 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash -459507878, now seen corresponding path program 238 times [2021-11-25 17:58:37,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004208782] [2021-11-25 17:58:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:37,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:37,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004208782] [2021-11-25 17:58:37,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004208782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:37,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:37,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:58:37,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663313551] [2021-11-25 17:58:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:37,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:58:37,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:58:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:58:37,419 INFO L87 Difference]: Start difference. First operand 813 states and 2332 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) [2021-11-25 17:58:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:38,624 INFO L93 Difference]: Finished difference Result 2925 states and 7819 transitions. [2021-11-25 17:58:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:58:38,625 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 [2021-11-25 17:58:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:38,629 INFO L225 Difference]: With dead ends: 2925 [2021-11-25 17:58:38,629 INFO L226 Difference]: Without dead ends: 2911 [2021-11-25 17:58:38,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:58:38,629 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:38,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-11-25 17:58:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 804. [2021-11-25 17:58:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.8779576587795765) internal successors, (2311), 803 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) [2021-11-25 17:58:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2311 transitions. [2021-11-25 17:58:38,652 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2311 transitions. Word has length 36 [2021-11-25 17:58:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:38,652 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 2311 transitions. [2021-11-25 17:58:38,652 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) [2021-11-25 17:58:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2311 transitions. [2021-11-25 17:58:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:58:38,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:38,653 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] [2021-11-25 17:58:38,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-11-25 17:58:38,653 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-25 17:58:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash 46558340, now seen corresponding path program 239 times [2021-11-25 17:58:38,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:38,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477915216] [2021-11-25 17:58:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:38,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:38,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:38,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477915216] [2021-11-25 17:58:38,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477915216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:38,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:38,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:38,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719317809] [2021-11-25 17:58:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:38,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:38,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:38,989 INFO L87 Difference]: Start difference. First operand 804 states and 2311 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)