./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.06.cil.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_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/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_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.06.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/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_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/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 bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:11:11,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:11:11,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:11:11,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:11:11,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:11:11,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:11:11,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:11:11,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:11:11,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:11:11,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:11:11,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:11:11,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:11:11,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:11:11,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:11:11,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:11:11,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:11:11,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:11:11,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:11:11,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:11:11,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:11:11,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:11:11,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:11:11,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:11:11,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:11:11,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:11:11,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:11:11,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:11:11,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:11:11,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:11:11,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:11:11,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:11:11,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:11:11,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:11:11,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:11:11,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:11:11,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:11:11,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:11:11,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:11:11,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:11:11,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:11:11,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:11:11,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:11:11,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:11:11,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:11:11,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:11:11,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:11:11,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:11:11,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:11:11,781 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:11:11,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:11:11,781 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:11:11,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:11:11,782 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:11:11,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:11:11,782 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:11:11,782 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:11:11,782 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:11:11,783 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:11:11,783 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:11:11,783 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:11:11,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:11:11,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:11:11,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:11:11,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:11:11,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:11:11,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:11:11,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:11:11,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:11:11,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:11:11,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:11:11,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:11:11,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:11:11,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:11:11,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:11:11,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:11,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:11:11,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:11:11,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:11:11,787 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:11:11,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:11:11,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:11:11,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:11:11,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:11:11,787 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_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df [2021-11-25 19:11:12,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:11:12,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:11:12,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:11:12,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:11:12,057 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:11:12,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/systemc/transmitter.06.cil.c [2021-11-25 19:11:12,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/data/e33fbb427/97f36ab1833445b6991223c67b40a73b/FLAG4415a57dd [2021-11-25 19:11:12,565 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:11:12,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/sv-benchmarks/c/systemc/transmitter.06.cil.c [2021-11-25 19:11:12,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/data/e33fbb427/97f36ab1833445b6991223c67b40a73b/FLAG4415a57dd [2021-11-25 19:11:12,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/data/e33fbb427/97f36ab1833445b6991223c67b40a73b [2021-11-25 19:11:12,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:11:12,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:11:12,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:12,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:11:12,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:11:12,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:12" (1/1) ... [2021-11-25 19:11:12,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1328bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:12, skipping insertion in model container [2021-11-25 19:11:12,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:11:12" (1/1) ... [2021-11-25 19:11:12,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:11:13,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:11:13,206 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_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/sv-benchmarks/c/systemc/transmitter.06.cil.c[706,719] [2021-11-25 19:11:13,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:13,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:11:13,314 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_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/sv-benchmarks/c/systemc/transmitter.06.cil.c[706,719] [2021-11-25 19:11:13,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:13,412 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:11:13,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13 WrapperNode [2021-11-25 19:11:13,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:13,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:13,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:11:13,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:11:13,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,495 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 492 [2021-11-25 19:11:13,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:13,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:11:13,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:11:13,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:11:13,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:11:13,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:11:13,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:11:13,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:11:13,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (1/1) ... [2021-11-25 19:11:13,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:13,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:13,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:11:13,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:11:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:11:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-25 19:11:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-25 19:11:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-25 19:11:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-25 19:11:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-25 19:11:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-25 19:11:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-25 19:11:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-25 19:11:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-25 19:11:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-25 19:11:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:11:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-25 19:11:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-25 19:11:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:11:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:11:13,823 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:11:13,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:11:14,457 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:11:14,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:11:14,800 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-25 19:11:14,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:14 BoogieIcfgContainer [2021-11-25 19:11:14,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:11:14,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:11:14,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:11:14,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:11:14,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:11:12" (1/3) ... [2021-11-25 19:11:14,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234159bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:14, skipping insertion in model container [2021-11-25 19:11:14,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:13" (2/3) ... [2021-11-25 19:11:14,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234159bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:14, skipping insertion in model container [2021-11-25 19:11:14,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:14" (3/3) ... [2021-11-25 19:11:14,813 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2021-11-25 19:11:14,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:11:14,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:11:14,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:11:14,871 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 19:11:14,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:11:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 93 states have (on average 1.5376344086021505) internal successors, (143), 95 states have internal predecessors, (143), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 19:11:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:11:14,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:14,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:14,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 826952206, now seen corresponding path program 1 times [2021-11-25 19:11:14,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:14,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470655858] [2021-11-25 19:11:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:14,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:15,312 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 19:11:15,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470655858] [2021-11-25 19:11:15,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470655858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:15,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:15,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:11:15,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057036826] [2021-11-25 19:11:15,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:15,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:11:15,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:11:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:11:15,360 INFO L87 Difference]: Start difference. First operand has 120 states, 93 states have (on average 1.5376344086021505) internal successors, (143), 95 states have internal predecessors, (143), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:15,774 INFO L93 Difference]: Finished difference Result 343 states and 533 transitions. [2021-11-25 19:11:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:11:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-25 19:11:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:15,794 INFO L225 Difference]: With dead ends: 343 [2021-11-25 19:11:15,794 INFO L226 Difference]: Without dead ends: 224 [2021-11-25 19:11:15,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:11:15,809 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 301 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:15,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 462 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:11:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-25 19:11:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2021-11-25 19:11:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 175 states have (on average 1.4628571428571429) internal successors, (256), 176 states have internal predecessors, (256), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-25 19:11:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 322 transitions. [2021-11-25 19:11:15,918 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 322 transitions. Word has length 53 [2021-11-25 19:11:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:15,919 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 322 transitions. [2021-11-25 19:11:15,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 322 transitions. [2021-11-25 19:11:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:11:15,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:15,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:15,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:11:15,927 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1569484785, now seen corresponding path program 1 times [2021-11-25 19:11:15,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:15,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793963248] [2021-11-25 19:11:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:15,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:16,164 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 19:11:16,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:16,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793963248] [2021-11-25 19:11:16,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793963248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:16,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:16,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:11:16,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469303072] [2021-11-25 19:11:16,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:16,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:11:16,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:11:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:11:16,170 INFO L87 Difference]: Start difference. First operand 221 states and 322 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:16,707 INFO L93 Difference]: Finished difference Result 748 states and 1099 transitions. [2021-11-25 19:11:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:11:16,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-25 19:11:16,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:16,713 INFO L225 Difference]: With dead ends: 748 [2021-11-25 19:11:16,713 INFO L226 Difference]: Without dead ends: 512 [2021-11-25 19:11:16,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:11:16,716 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 604 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:16,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 739 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:11:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-25 19:11:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 500. [2021-11-25 19:11:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 407 states have (on average 1.457002457002457) internal successors, (593), 403 states have internal predecessors, (593), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (71), 71 states have call predecessors, (71), 64 states have call successors, (71) [2021-11-25 19:11:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 728 transitions. [2021-11-25 19:11:16,761 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 728 transitions. Word has length 53 [2021-11-25 19:11:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:16,762 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 728 transitions. [2021-11-25 19:11:16,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 728 transitions. [2021-11-25 19:11:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:11:16,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:16,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:16,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:11:16,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash -444224816, now seen corresponding path program 1 times [2021-11-25 19:11:16,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:16,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586570720] [2021-11-25 19:11:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:16,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:16,833 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 19:11:16,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:16,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586570720] [2021-11-25 19:11:16,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586570720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:16,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:16,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:11:16,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283211635] [2021-11-25 19:11:16,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:16,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:11:16,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:11:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:11:16,837 INFO L87 Difference]: Start difference. First operand 500 states and 728 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:17,305 INFO L93 Difference]: Finished difference Result 1731 states and 2549 transitions. [2021-11-25 19:11:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:11:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-25 19:11:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:17,315 INFO L225 Difference]: With dead ends: 1731 [2021-11-25 19:11:17,315 INFO L226 Difference]: Without dead ends: 1199 [2021-11-25 19:11:17,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:11:17,319 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 604 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:17,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 606 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:11:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-25 19:11:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 939. [2021-11-25 19:11:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 766 states have (on average 1.4556135770234986) internal successors, (1115), 763 states have internal predecessors, (1115), 116 states have call successors, (116), 50 states have call predecessors, (116), 56 states have return successors, (136), 126 states have call predecessors, (136), 116 states have call successors, (136) [2021-11-25 19:11:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1367 transitions. [2021-11-25 19:11:17,383 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1367 transitions. Word has length 53 [2021-11-25 19:11:17,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:17,384 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1367 transitions. [2021-11-25 19:11:17,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1367 transitions. [2021-11-25 19:11:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:11:17,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:17,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:17,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:11:17,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2072875089, now seen corresponding path program 1 times [2021-11-25 19:11:17,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:17,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304245365] [2021-11-25 19:11:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:17,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:17,453 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 19:11:17,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:17,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304245365] [2021-11-25 19:11:17,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304245365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:17,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:17,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:11:17,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341484644] [2021-11-25 19:11:17,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:17,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:11:17,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:11:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:11:17,456 INFO L87 Difference]: Start difference. First operand 939 states and 1367 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:17,929 INFO L93 Difference]: Finished difference Result 3186 states and 4702 transitions. [2021-11-25 19:11:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:11:17,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-25 19:11:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:17,949 INFO L225 Difference]: With dead ends: 3186 [2021-11-25 19:11:17,949 INFO L226 Difference]: Without dead ends: 2182 [2021-11-25 19:11:17,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:11:17,964 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 604 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:17,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 606 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:11:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2021-11-25 19:11:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1791. [2021-11-25 19:11:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1462 states have (on average 1.4521203830369358) internal successors, (2123), 1463 states have internal predecessors, (2123), 216 states have call successors, (216), 98 states have call predecessors, (216), 112 states have return successors, (260), 230 states have call predecessors, (260), 216 states have call successors, (260) [2021-11-25 19:11:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2599 transitions. [2021-11-25 19:11:18,141 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2599 transitions. Word has length 53 [2021-11-25 19:11:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:18,141 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 2599 transitions. [2021-11-25 19:11:18,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2599 transitions. [2021-11-25 19:11:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:11:18,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:18,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:18,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:11:18,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1913653198, now seen corresponding path program 1 times [2021-11-25 19:11:18,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427653653] [2021-11-25 19:11:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:18,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:18,232 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 19:11:18,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:18,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427653653] [2021-11-25 19:11:18,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427653653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:18,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:18,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:18,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117622986] [2021-11-25 19:11:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:18,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:11:18,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:11:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:18,240 INFO L87 Difference]: Start difference. First operand 1791 states and 2599 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:18,761 INFO L93 Difference]: Finished difference Result 5440 states and 7938 transitions. [2021-11-25 19:11:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:18,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-11-25 19:11:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:18,793 INFO L225 Difference]: With dead ends: 5440 [2021-11-25 19:11:18,793 INFO L226 Difference]: Without dead ends: 3655 [2021-11-25 19:11:18,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:11:18,809 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 562 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:18,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 513 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:11:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-11-25 19:11:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 2991. [2021-11-25 19:11:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2470 states have (on average 1.4392712550607287) internal successors, (3555), 2471 states have internal predecessors, (3555), 328 states have call successors, (328), 164 states have call predecessors, (328), 192 states have return successors, (416), 356 states have call predecessors, (416), 328 states have call successors, (416) [2021-11-25 19:11:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4299 transitions. [2021-11-25 19:11:19,072 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4299 transitions. Word has length 53 [2021-11-25 19:11:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:19,073 INFO L470 AbstractCegarLoop]: Abstraction has 2991 states and 4299 transitions. [2021-11-25 19:11:19,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4299 transitions. [2021-11-25 19:11:19,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:11:19,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:19,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:19,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:11:19,075 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash -195505164, now seen corresponding path program 1 times [2021-11-25 19:11:19,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:19,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612870762] [2021-11-25 19:11:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:19,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:19,153 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 19:11:19,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:19,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612870762] [2021-11-25 19:11:19,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612870762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:19,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:19,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:19,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336397427] [2021-11-25 19:11:19,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:19,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:11:19,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:19,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:11:19,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:19,156 INFO L87 Difference]: Start difference. First operand 2991 states and 4299 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:19,831 INFO L93 Difference]: Finished difference Result 10691 states and 15446 transitions. [2021-11-25 19:11:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:19,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-11-25 19:11:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:19,900 INFO L225 Difference]: With dead ends: 10691 [2021-11-25 19:11:19,900 INFO L226 Difference]: Without dead ends: 7706 [2021-11-25 19:11:19,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:11:19,945 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 607 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:19,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 390 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:11:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2021-11-25 19:11:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 5820. [2021-11-25 19:11:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5820 states, 4807 states have (on average 1.4302059496567505) internal successors, (6875), 4810 states have internal predecessors, (6875), 628 states have call successors, (628), 328 states have call predecessors, (628), 384 states have return successors, (790), 682 states have call predecessors, (790), 628 states have call successors, (790) [2021-11-25 19:11:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8293 transitions. [2021-11-25 19:11:20,411 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8293 transitions. Word has length 54 [2021-11-25 19:11:20,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:20,411 INFO L470 AbstractCegarLoop]: Abstraction has 5820 states and 8293 transitions. [2021-11-25 19:11:20,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8293 transitions. [2021-11-25 19:11:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:11:20,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:20,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:20,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:11:20,414 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2029129317, now seen corresponding path program 1 times [2021-11-25 19:11:20,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:20,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001001582] [2021-11-25 19:11:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:20,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:20,486 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 19:11:20,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:20,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001001582] [2021-11-25 19:11:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001001582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:20,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:20,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:20,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701312885] [2021-11-25 19:11:20,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:11:20,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:11:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:20,489 INFO L87 Difference]: Start difference. First operand 5820 states and 8293 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:21,369 INFO L93 Difference]: Finished difference Result 16236 states and 23285 transitions. [2021-11-25 19:11:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2021-11-25 19:11:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:21,448 INFO L225 Difference]: With dead ends: 16236 [2021-11-25 19:11:21,449 INFO L226 Difference]: Without dead ends: 10422 [2021-11-25 19:11:21,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:11:21,471 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 526 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:21,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 421 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:11:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2021-11-25 19:11:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 8636. [2021-11-25 19:11:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 7123 states have (on average 1.4217324161168048) internal successors, (10127), 7116 states have internal predecessors, (10127), 936 states have call successors, (936), 496 states have call predecessors, (936), 576 states have return successors, (1160), 1024 states have call predecessors, (1160), 936 states have call successors, (1160) [2021-11-25 19:11:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 12223 transitions. [2021-11-25 19:11:22,173 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 12223 transitions. Word has length 55 [2021-11-25 19:11:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:22,176 INFO L470 AbstractCegarLoop]: Abstraction has 8636 states and 12223 transitions. [2021-11-25 19:11:22,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 12223 transitions. [2021-11-25 19:11:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 19:11:22,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:22,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:22,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:11:22,180 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1834519152, now seen corresponding path program 1 times [2021-11-25 19:11:22,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:22,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559967810] [2021-11-25 19:11:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:22,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:22,298 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 19:11:22,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:22,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559967810] [2021-11-25 19:11:22,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559967810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:22,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:22,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:22,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248724547] [2021-11-25 19:11:22,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:22,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:11:22,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:11:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:22,303 INFO L87 Difference]: Start difference. First operand 8636 states and 12223 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:23,487 INFO L93 Difference]: Finished difference Result 23610 states and 33653 transitions. [2021-11-25 19:11:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2021-11-25 19:11:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:23,571 INFO L225 Difference]: With dead ends: 23610 [2021-11-25 19:11:23,571 INFO L226 Difference]: Without dead ends: 14980 [2021-11-25 19:11:23,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:11:23,602 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 485 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:23,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 498 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:11:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2021-11-25 19:11:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12866. [2021-11-25 19:11:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12866 states, 10601 states have (on average 1.4129799075558909) internal successors, (14979), 10574 states have internal predecessors, (14979), 1400 states have call successors, (1400), 752 states have call predecessors, (1400), 864 states have return successors, (1704), 1540 states have call predecessors, (1704), 1400 states have call successors, (1704) [2021-11-25 19:11:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12866 states to 12866 states and 18083 transitions. [2021-11-25 19:11:24,548 INFO L78 Accepts]: Start accepts. Automaton has 12866 states and 18083 transitions. Word has length 56 [2021-11-25 19:11:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:24,548 INFO L470 AbstractCegarLoop]: Abstraction has 12866 states and 18083 transitions. [2021-11-25 19:11:24,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12866 states and 18083 transitions. [2021-11-25 19:11:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 19:11:24,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:24,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:24,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:11:24,551 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:24,551 INFO L85 PathProgramCache]: Analyzing trace with hash -926859063, now seen corresponding path program 1 times [2021-11-25 19:11:24,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:24,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668504531] [2021-11-25 19:11:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:24,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:24,639 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 19:11:24,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:24,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668504531] [2021-11-25 19:11:24,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668504531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:24,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:24,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:24,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707417088] [2021-11-25 19:11:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:24,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:11:24,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:11:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:24,642 INFO L87 Difference]: Start difference. First operand 12866 states and 18083 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:26,181 INFO L93 Difference]: Finished difference Result 41998 states and 59370 transitions. [2021-11-25 19:11:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2021-11-25 19:11:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:26,305 INFO L225 Difference]: With dead ends: 41998 [2021-11-25 19:11:26,305 INFO L226 Difference]: Without dead ends: 29138 [2021-11-25 19:11:26,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:11:26,351 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 497 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:26,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 377 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:11:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29138 states. [2021-11-25 19:11:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29138 to 24944. [2021-11-25 19:11:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24944 states, 20559 states have (on average 1.402548762099324) internal successors, (28835), 20520 states have internal predecessors, (28835), 2676 states have call successors, (2676), 1492 states have call predecessors, (2676), 1708 states have return successors, (3220), 2932 states have call predecessors, (3220), 2676 states have call successors, (3220) [2021-11-25 19:11:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24944 states to 24944 states and 34731 transitions. [2021-11-25 19:11:28,248 INFO L78 Accepts]: Start accepts. Automaton has 24944 states and 34731 transitions. Word has length 57 [2021-11-25 19:11:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:28,249 INFO L470 AbstractCegarLoop]: Abstraction has 24944 states and 34731 transitions. [2021-11-25 19:11:28,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 24944 states and 34731 transitions. [2021-11-25 19:11:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:11:28,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:28,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:28,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:11:28,252 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1870733524, now seen corresponding path program 1 times [2021-11-25 19:11:28,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:28,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647923140] [2021-11-25 19:11:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:28,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:28,337 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 19:11:28,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:28,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647923140] [2021-11-25 19:11:28,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647923140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:28,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:28,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:28,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314255829] [2021-11-25 19:11:28,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:28,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:11:28,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:28,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:11:28,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:28,340 INFO L87 Difference]: Start difference. First operand 24944 states and 34731 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:30,700 INFO L93 Difference]: Finished difference Result 65216 states and 91339 transitions. [2021-11-25 19:11:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:30,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-11-25 19:11:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:30,887 INFO L225 Difference]: With dead ends: 65216 [2021-11-25 19:11:30,888 INFO L226 Difference]: Without dead ends: 40278 [2021-11-25 19:11:31,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:11:31,073 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 457 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:31,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 391 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:11:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40278 states. [2021-11-25 19:11:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40278 to 37268. [2021-11-25 19:11:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37268 states, 30729 states have (on average 1.3940251879332226) internal successors, (42837), 30642 states have internal predecessors, (42837), 3992 states have call successors, (3992), 2256 states have call predecessors, (3992), 2546 states have return successors, (4706), 4370 states have call predecessors, (4706), 3992 states have call successors, (4706) [2021-11-25 19:11:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37268 states to 37268 states and 51535 transitions. [2021-11-25 19:11:33,651 INFO L78 Accepts]: Start accepts. Automaton has 37268 states and 51535 transitions. Word has length 58 [2021-11-25 19:11:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:33,652 INFO L470 AbstractCegarLoop]: Abstraction has 37268 states and 51535 transitions. [2021-11-25 19:11:33,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:11:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 37268 states and 51535 transitions. [2021-11-25 19:11:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 19:11:33,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:33,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:33,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:11:33,654 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1727083731, now seen corresponding path program 1 times [2021-11-25 19:11:33,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:33,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336902197] [2021-11-25 19:11:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:33,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:33,695 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 19:11:33,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:33,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336902197] [2021-11-25 19:11:33,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336902197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:33,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:33,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:11:33,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348108820] [2021-11-25 19:11:33,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:33,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:33,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:33,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:11:33,699 INFO L87 Difference]: Start difference. First operand 37268 states and 51535 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 19:11:37,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:37,040 INFO L93 Difference]: Finished difference Result 110819 states and 155169 transitions. [2021-11-25 19:11:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2021-11-25 19:11:37,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:37,365 INFO L225 Difference]: With dead ends: 110819 [2021-11-25 19:11:37,365 INFO L226 Difference]: Without dead ends: 73556 [2021-11-25 19:11:37,458 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 19:11:37,458 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 140 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:37,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 286 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73556 states. [2021-11-25 19:11:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73556 to 73168. [2021-11-25 19:11:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73168 states, 60095 states have (on average 1.370613195773359) internal successors, (82367), 59920 states have internal predecessors, (82367), 7980 states have call successors, (7980), 4512 states have call predecessors, (7980), 5092 states have return successors, (9408), 8736 states have call predecessors, (9408), 7980 states have call successors, (9408) [2021-11-25 19:11:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73168 states to 73168 states and 99755 transitions. [2021-11-25 19:11:42,003 INFO L78 Accepts]: Start accepts. Automaton has 73168 states and 99755 transitions. Word has length 59 [2021-11-25 19:11:42,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:42,003 INFO L470 AbstractCegarLoop]: Abstraction has 73168 states and 99755 transitions. [2021-11-25 19:11:42,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-25 19:11:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 73168 states and 99755 transitions. [2021-11-25 19:11:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:11:42,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:42,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:42,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:11:42,027 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1993899493, now seen corresponding path program 1 times [2021-11-25 19:11:42,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174462109] [2021-11-25 19:11:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:42,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:11:42,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174462109] [2021-11-25 19:11:42,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174462109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:42,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:42,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:11:42,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582229913] [2021-11-25 19:11:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:42,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:42,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:11:42,078 INFO L87 Difference]: Start difference. First operand 73168 states and 99755 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 19:11:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:46,305 INFO L93 Difference]: Finished difference Result 138542 states and 192062 transitions. [2021-11-25 19:11:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2021-11-25 19:11:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:46,682 INFO L225 Difference]: With dead ends: 138542 [2021-11-25 19:11:46,683 INFO L226 Difference]: Without dead ends: 94692 [2021-11-25 19:11:46,803 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 19:11:46,804 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 105 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:46,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 396 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:11:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94692 states. [2021-11-25 19:11:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94692 to 76078. [2021-11-25 19:11:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76078 states, 62999 states have (on average 1.3873077350434133) internal successors, (87399), 62912 states have internal predecessors, (87399), 8072 states have call successors, (8072), 4716 states have call predecessors, (8072), 5006 states have return successors, (8786), 8450 states have call predecessors, (8786), 8072 states have call successors, (8786) [2021-11-25 19:11:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76078 states to 76078 states and 104257 transitions. [2021-11-25 19:11:51,247 INFO L78 Accepts]: Start accepts. Automaton has 76078 states and 104257 transitions. Word has length 81 [2021-11-25 19:11:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:51,248 INFO L470 AbstractCegarLoop]: Abstraction has 76078 states and 104257 transitions. [2021-11-25 19:11:51,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 19:11:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 76078 states and 104257 transitions. [2021-11-25 19:11:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 19:11:51,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:51,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:51,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:11:51,353 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:51,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -673793847, now seen corresponding path program 1 times [2021-11-25 19:11:51,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:51,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265323686] [2021-11-25 19:11:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:51,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:11:51,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:51,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265323686] [2021-11-25 19:11:51,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265323686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:11:51,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383965028] [2021-11-25 19:11:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:51,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:11:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:51,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:11:51,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc0c3195-9c28-4031-9e7b-f5fc3faab82f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:11:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:11:51,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:11:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:11:51,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:11:51,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383965028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:51,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:11:51,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:11:51,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975760643] [2021-11-25 19:11:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:51,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:51,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:51,897 INFO L87 Difference]: Start difference. First operand 76078 states and 104257 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:11:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:56,434 INFO L93 Difference]: Finished difference Result 146470 states and 202453 transitions. [2021-11-25 19:11:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:56,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2021-11-25 19:11:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:56,732 INFO L225 Difference]: With dead ends: 146470 [2021-11-25 19:11:56,732 INFO L226 Difference]: Without dead ends: 95062 [2021-11-25 19:11:57,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:11:57,125 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 96 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:57,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 388 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:11:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95062 states.