./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_net_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_net_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan --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 30408d7207b57838e2c50a4f8ea35b606de13b17 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:27:35,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:27:35,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:27:35,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:27:35,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:27:35,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:27:35,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:27:35,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:27:35,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:27:35,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:27:35,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:27:35,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:27:35,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:27:35,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:27:35,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:27:35,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:27:35,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:27:35,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:27:35,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:27:35,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:27:35,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:27:35,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:27:35,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:27:35,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:27:35,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:27:35,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:27:35,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:27:35,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:27:35,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:27:35,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:27:35,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:27:35,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:27:35,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:27:35,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:27:35,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:27:35,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:27:35,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:27:35,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:27:35,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:27:35,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:27:35,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:27:35,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:27:35,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:27:35,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:27:35,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:27:35,883 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:27:35,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:27:35,883 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:27:35,884 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:27:35,884 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:27:35,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:27:35,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:27:35,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:27:35,884 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:27:35,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:27:35,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:27:35,885 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:27:35,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:27:35,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:27:35,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:27:35,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:27:35,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:27:35,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:27:35,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:27:35,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:27:35,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:27:35,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:27:35,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:27:35,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:27:35,889 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-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30408d7207b57838e2c50a4f8ea35b606de13b17 [2020-12-09 07:27:36,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:27:36,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:27:36,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:27:36,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:27:36,074 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:27:36,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/../../sv-benchmarks/c/psyco/psyco_net_1.c [2020-12-09 07:27:36,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/data/ca6657073/bad47ef9f434486788ccff3ce350e3e3/FLAGfd8fdbb5c [2020-12-09 07:27:36,861 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:27:36,861 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/sv-benchmarks/c/psyco/psyco_net_1.c [2020-12-09 07:27:37,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/data/ca6657073/bad47ef9f434486788ccff3ce350e3e3/FLAGfd8fdbb5c [2020-12-09 07:27:37,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/data/ca6657073/bad47ef9f434486788ccff3ce350e3e3 [2020-12-09 07:27:37,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:27:37,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:27:37,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:27:37,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:27:37,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:27:37,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:27:37" (1/1) ... [2020-12-09 07:27:37,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4271e7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:37, skipping insertion in model container [2020-12-09 07:27:37,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:27:37" (1/1) ... [2020-12-09 07:27:37,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:27:37,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:27:38,776 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/sv-benchmarks/c/psyco/psyco_net_1.c[2349407,2349420] [2020-12-09 07:27:38,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:27:38,824 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:27:39,410 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/sv-benchmarks/c/psyco/psyco_net_1.c[2349407,2349420] [2020-12-09 07:27:39,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:27:39,452 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:27:39,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39 WrapperNode [2020-12-09 07:27:39,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:27:39,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:27:39,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:27:39,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:27:39,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:39,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:27:40,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:27:40,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:27:40,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:27:40,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... [2020-12-09 07:27:40,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:27:40,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:27:40,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:27:40,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:27:40,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:27:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:27:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:27:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:27:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:27:53,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:27:53,544 INFO L299 CfgBuilder]: Removed 1134 assume(true) statements. [2020-12-09 07:27:53,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:27:53 BoogieIcfgContainer [2020-12-09 07:27:53,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:27:53,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:27:53,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:27:53,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:27:53,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:27:37" (1/3) ... [2020-12-09 07:27:53,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a0cefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:27:53, skipping insertion in model container [2020-12-09 07:27:53,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:27:39" (2/3) ... [2020-12-09 07:27:53,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a0cefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:27:53, skipping insertion in model container [2020-12-09 07:27:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:27:53" (3/3) ... [2020-12-09 07:27:53,560 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2020-12-09 07:27:53,570 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:27:53,578 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:27:53,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:27:53,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:27:53,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:27:53,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:27:53,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:27:53,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:27:53,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:27:53,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:27:53,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:27:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9209 states. [2020-12-09 07:27:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:27:53,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:27:53,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:27:53,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:27:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:27:53,732 INFO L82 PathProgramCache]: Analyzing trace with hash 182211473, now seen corresponding path program 1 times [2020-12-09 07:27:53,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:27:53,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551411956] [2020-12-09 07:27:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:27:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:27:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:27:53,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551411956] [2020-12-09 07:27:53,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:27:53,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:27:53,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089667360] [2020-12-09 07:27:53,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:27:53,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:27:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:27:53,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:27:53,974 INFO L87 Difference]: Start difference. First operand 9209 states. Second operand 2 states. [2020-12-09 07:27:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:27:54,170 INFO L93 Difference]: Finished difference Result 17695 states and 35377 transitions. [2020-12-09 07:27:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:27:54,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 07:27:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:27:54,228 INFO L225 Difference]: With dead ends: 17695 [2020-12-09 07:27:54,228 INFO L226 Difference]: Without dead ends: 8279 [2020-12-09 07:27:54,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:27:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2020-12-09 07:27:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 8279. [2020-12-09 07:27:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8279 states. [2020-12-09 07:27:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 12996 transitions. [2020-12-09 07:27:54,438 INFO L78 Accepts]: Start accepts. Automaton has 8279 states and 12996 transitions. Word has length 8 [2020-12-09 07:27:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:27:54,438 INFO L481 AbstractCegarLoop]: Abstraction has 8279 states and 12996 transitions. [2020-12-09 07:27:54,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:27:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8279 states and 12996 transitions. [2020-12-09 07:27:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:27:54,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:27:54,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:27:54,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:27:54,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:27:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:27:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1884649833, now seen corresponding path program 1 times [2020-12-09 07:27:54,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:27:54,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506662622] [2020-12-09 07:27:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:27:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:27:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:27:54,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506662622] [2020-12-09 07:27:54,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:27:54,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:27:54,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845029184] [2020-12-09 07:27:54,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:27:54,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:27:54,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:27:54,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:27:54,536 INFO L87 Difference]: Start difference. First operand 8279 states and 12996 transitions. Second operand 3 states. [2020-12-09 07:27:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:27:56,226 INFO L93 Difference]: Finished difference Result 16560 states and 25995 transitions. [2020-12-09 07:27:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:27:56,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 07:27:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:27:56,264 INFO L225 Difference]: With dead ends: 16560 [2020-12-09 07:27:56,264 INFO L226 Difference]: Without dead ends: 8282 [2020-12-09 07:27:56,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:27:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2020-12-09 07:27:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8282. [2020-12-09 07:27:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8282 states. [2020-12-09 07:27:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 12999 transitions. [2020-12-09 07:27:56,398 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 12999 transitions. Word has length 9 [2020-12-09 07:27:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:27:56,399 INFO L481 AbstractCegarLoop]: Abstraction has 8282 states and 12999 transitions. [2020-12-09 07:27:56,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:27:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 12999 transitions. [2020-12-09 07:27:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 07:27:56,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:27:56,400 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:27:56,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:27:56,400 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:27:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:27:56,400 INFO L82 PathProgramCache]: Analyzing trace with hash 897026676, now seen corresponding path program 1 times [2020-12-09 07:27:56,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:27:56,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719064522] [2020-12-09 07:27:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:27:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:27:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:27:56,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719064522] [2020-12-09 07:27:56,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:27:56,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:27:56,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078964747] [2020-12-09 07:27:56,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:27:56,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:27:56,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:27:56,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:27:56,477 INFO L87 Difference]: Start difference. First operand 8282 states and 12999 transitions. Second operand 3 states. [2020-12-09 07:27:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:27:57,932 INFO L93 Difference]: Finished difference Result 16568 states and 26004 transitions. [2020-12-09 07:27:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:27:57,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-09 07:27:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:27:57,964 INFO L225 Difference]: With dead ends: 16568 [2020-12-09 07:27:57,964 INFO L226 Difference]: Without dead ends: 8288 [2020-12-09 07:27:57,972 INFO L677 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 [2020-12-09 07:27:57,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8288 states. [2020-12-09 07:27:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8288 to 8286. [2020-12-09 07:27:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8286 states. [2020-12-09 07:27:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8286 states to 8286 states and 13003 transitions. [2020-12-09 07:27:58,094 INFO L78 Accepts]: Start accepts. Automaton has 8286 states and 13003 transitions. Word has length 14 [2020-12-09 07:27:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:27:58,094 INFO L481 AbstractCegarLoop]: Abstraction has 8286 states and 13003 transitions. [2020-12-09 07:27:58,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:27:58,094 INFO L276 IsEmpty]: Start isEmpty. Operand 8286 states and 13003 transitions. [2020-12-09 07:27:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 07:27:58,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:27:58,095 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:27:58,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:27:58,095 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:27:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:27:58,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1409738145, now seen corresponding path program 1 times [2020-12-09 07:27:58,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:27:58,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475607922] [2020-12-09 07:27:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:27:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:27:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:27:58,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475607922] [2020-12-09 07:27:58,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:27:58,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:27:58,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682168804] [2020-12-09 07:27:58,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:27:58,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:27:58,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:27:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:27:58,154 INFO L87 Difference]: Start difference. First operand 8286 states and 13003 transitions. Second operand 3 states. [2020-12-09 07:28:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:00,821 INFO L93 Difference]: Finished difference Result 16490 states and 25884 transitions. [2020-12-09 07:28:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:00,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 07:28:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:00,834 INFO L225 Difference]: With dead ends: 16490 [2020-12-09 07:28:00,834 INFO L226 Difference]: Without dead ends: 8164 [2020-12-09 07:28:00,842 INFO L677 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 [2020-12-09 07:28:00,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8164 states. [2020-12-09 07:28:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8164 to 8164. [2020-12-09 07:28:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8164 states. [2020-12-09 07:28:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8164 states to 8164 states and 12380 transitions. [2020-12-09 07:28:01,022 INFO L78 Accepts]: Start accepts. Automaton has 8164 states and 12380 transitions. Word has length 18 [2020-12-09 07:28:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:01,022 INFO L481 AbstractCegarLoop]: Abstraction has 8164 states and 12380 transitions. [2020-12-09 07:28:01,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8164 states and 12380 transitions. [2020-12-09 07:28:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 07:28:01,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:01,023 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:01,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:28:01,023 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:01,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1096116993, now seen corresponding path program 1 times [2020-12-09 07:28:01,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:01,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047302870] [2020-12-09 07:28:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:01,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047302870] [2020-12-09 07:28:01,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:01,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:01,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460569955] [2020-12-09 07:28:01,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:01,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:01,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:01,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:01,077 INFO L87 Difference]: Start difference. First operand 8164 states and 12380 transitions. Second operand 3 states. [2020-12-09 07:28:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:03,964 INFO L93 Difference]: Finished difference Result 24488 states and 37136 transitions. [2020-12-09 07:28:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:03,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-09 07:28:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:03,989 INFO L225 Difference]: With dead ends: 24488 [2020-12-09 07:28:03,990 INFO L226 Difference]: Without dead ends: 16276 [2020-12-09 07:28:03,999 INFO L677 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 [2020-12-09 07:28:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16276 states. [2020-12-09 07:28:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16276 to 14962. [2020-12-09 07:28:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14962 states. [2020-12-09 07:28:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 23289 transitions. [2020-12-09 07:28:04,168 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 23289 transitions. Word has length 22 [2020-12-09 07:28:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:04,168 INFO L481 AbstractCegarLoop]: Abstraction has 14962 states and 23289 transitions. [2020-12-09 07:28:04,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 23289 transitions. [2020-12-09 07:28:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 07:28:04,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:04,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:04,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:28:04,169 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:04,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:04,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1423449426, now seen corresponding path program 1 times [2020-12-09 07:28:04,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:04,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302407631] [2020-12-09 07:28:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:04,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302407631] [2020-12-09 07:28:04,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:04,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:04,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897910101] [2020-12-09 07:28:04,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:04,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:04,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:04,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:04,229 INFO L87 Difference]: Start difference. First operand 14962 states and 23289 transitions. Second operand 3 states. [2020-12-09 07:28:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:09,076 INFO L93 Difference]: Finished difference Result 37762 states and 58559 transitions. [2020-12-09 07:28:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:09,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-09 07:28:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:09,103 INFO L225 Difference]: With dead ends: 37762 [2020-12-09 07:28:09,103 INFO L226 Difference]: Without dead ends: 22520 [2020-12-09 07:28:09,117 INFO L677 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 [2020-12-09 07:28:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22520 states. [2020-12-09 07:28:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22520 to 21280. [2020-12-09 07:28:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21280 states. [2020-12-09 07:28:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21280 states to 21280 states and 33023 transitions. [2020-12-09 07:28:09,330 INFO L78 Accepts]: Start accepts. Automaton has 21280 states and 33023 transitions. Word has length 24 [2020-12-09 07:28:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:09,330 INFO L481 AbstractCegarLoop]: Abstraction has 21280 states and 33023 transitions. [2020-12-09 07:28:09,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 21280 states and 33023 transitions. [2020-12-09 07:28:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 07:28:09,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:09,331 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 07:28:09,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:28:09,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:09,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1092028023, now seen corresponding path program 1 times [2020-12-09 07:28:09,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:09,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247087760] [2020-12-09 07:28:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:09,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247087760] [2020-12-09 07:28:09,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:09,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:09,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594154312] [2020-12-09 07:28:09,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:09,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:09,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:09,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:09,386 INFO L87 Difference]: Start difference. First operand 21280 states and 33023 transitions. Second operand 3 states. [2020-12-09 07:28:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:14,473 INFO L93 Difference]: Finished difference Result 63806 states and 99005 transitions. [2020-12-09 07:28:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:14,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-09 07:28:14,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:14,524 INFO L225 Difference]: With dead ends: 63806 [2020-12-09 07:28:14,524 INFO L226 Difference]: Without dead ends: 42528 [2020-12-09 07:28:14,542 INFO L677 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 [2020-12-09 07:28:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42528 states. [2020-12-09 07:28:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42528 to 40444. [2020-12-09 07:28:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40444 states. [2020-12-09 07:28:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40444 states to 40444 states and 63684 transitions. [2020-12-09 07:28:14,931 INFO L78 Accepts]: Start accepts. Automaton has 40444 states and 63684 transitions. Word has length 29 [2020-12-09 07:28:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:14,932 INFO L481 AbstractCegarLoop]: Abstraction has 40444 states and 63684 transitions. [2020-12-09 07:28:14,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 40444 states and 63684 transitions. [2020-12-09 07:28:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 07:28:14,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:14,933 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:14,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:28:14,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:14,934 INFO L82 PathProgramCache]: Analyzing trace with hash -197265190, now seen corresponding path program 1 times [2020-12-09 07:28:14,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707033192] [2020-12-09 07:28:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:28:14,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707033192] [2020-12-09 07:28:14,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:14,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:14,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627120544] [2020-12-09 07:28:14,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:14,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:14,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:14,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:14,995 INFO L87 Difference]: Start difference. First operand 40444 states and 63684 transitions. Second operand 3 states. [2020-12-09 07:28:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:16,414 INFO L93 Difference]: Finished difference Result 79525 states and 125193 transitions. [2020-12-09 07:28:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:16,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-09 07:28:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:16,464 INFO L225 Difference]: With dead ends: 79525 [2020-12-09 07:28:16,464 INFO L226 Difference]: Without dead ends: 39083 [2020-12-09 07:28:16,490 INFO L677 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 [2020-12-09 07:28:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39083 states. [2020-12-09 07:28:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39083 to 39081. [2020-12-09 07:28:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39081 states. [2020-12-09 07:28:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39081 states to 39081 states and 61492 transitions. [2020-12-09 07:28:16,966 INFO L78 Accepts]: Start accepts. Automaton has 39081 states and 61492 transitions. Word has length 35 [2020-12-09 07:28:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:16,966 INFO L481 AbstractCegarLoop]: Abstraction has 39081 states and 61492 transitions. [2020-12-09 07:28:16,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 39081 states and 61492 transitions. [2020-12-09 07:28:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 07:28:16,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:16,967 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 07:28:16,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 07:28:16,967 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -504887773, now seen corresponding path program 1 times [2020-12-09 07:28:16,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:16,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164603857] [2020-12-09 07:28:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:17,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164603857] [2020-12-09 07:28:17,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:17,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:17,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732568689] [2020-12-09 07:28:17,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:17,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:17,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:17,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:17,019 INFO L87 Difference]: Start difference. First operand 39081 states and 61492 transitions. Second operand 3 states. [2020-12-09 07:28:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:20,021 INFO L93 Difference]: Finished difference Result 104906 states and 165288 transitions. [2020-12-09 07:28:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:20,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-09 07:28:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:20,105 INFO L225 Difference]: With dead ends: 104906 [2020-12-09 07:28:20,105 INFO L226 Difference]: Without dead ends: 65993 [2020-12-09 07:28:20,134 INFO L677 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 [2020-12-09 07:28:20,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65993 states. [2020-12-09 07:28:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65993 to 64333. [2020-12-09 07:28:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64333 states. [2020-12-09 07:28:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64333 states to 64333 states and 101925 transitions. [2020-12-09 07:28:20,789 INFO L78 Accepts]: Start accepts. Automaton has 64333 states and 101925 transitions. Word has length 38 [2020-12-09 07:28:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:20,789 INFO L481 AbstractCegarLoop]: Abstraction has 64333 states and 101925 transitions. [2020-12-09 07:28:20,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 64333 states and 101925 transitions. [2020-12-09 07:28:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-09 07:28:20,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:20,791 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:20,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 07:28:20,791 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 260532153, now seen corresponding path program 1 times [2020-12-09 07:28:20,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:20,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204597174] [2020-12-09 07:28:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:28:20,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204597174] [2020-12-09 07:28:20,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:20,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:20,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859984809] [2020-12-09 07:28:20,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:20,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:20,846 INFO L87 Difference]: Start difference. First operand 64333 states and 101925 transitions. Second operand 3 states. [2020-12-09 07:28:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:22,438 INFO L93 Difference]: Finished difference Result 128504 states and 203587 transitions. [2020-12-09 07:28:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:22,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-09 07:28:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:22,518 INFO L225 Difference]: With dead ends: 128504 [2020-12-09 07:28:22,518 INFO L226 Difference]: Without dead ends: 64385 [2020-12-09 07:28:22,553 INFO L677 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 [2020-12-09 07:28:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64385 states. [2020-12-09 07:28:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64385 to 64383. [2020-12-09 07:28:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64383 states. [2020-12-09 07:28:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64383 states to 64383 states and 101975 transitions. [2020-12-09 07:28:23,171 INFO L78 Accepts]: Start accepts. Automaton has 64383 states and 101975 transitions. Word has length 42 [2020-12-09 07:28:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:23,171 INFO L481 AbstractCegarLoop]: Abstraction has 64383 states and 101975 transitions. [2020-12-09 07:28:23,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 64383 states and 101975 transitions. [2020-12-09 07:28:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-09 07:28:23,172 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:23,173 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:23,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 07:28:23,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1850197707, now seen corresponding path program 1 times [2020-12-09 07:28:23,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:23,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653089577] [2020-12-09 07:28:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:23,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653089577] [2020-12-09 07:28:23,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:23,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:28:23,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343224783] [2020-12-09 07:28:23,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:28:23,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:23,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:28:23,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:28:23,239 INFO L87 Difference]: Start difference. First operand 64383 states and 101975 transitions. Second operand 4 states. [2020-12-09 07:28:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:28,413 INFO L93 Difference]: Finished difference Result 123102 states and 194867 transitions. [2020-12-09 07:28:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:28:28,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-09 07:28:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:28,495 INFO L225 Difference]: With dead ends: 123102 [2020-12-09 07:28:28,495 INFO L226 Difference]: Without dead ends: 64643 [2020-12-09 07:28:28,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:28:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64643 states. [2020-12-09 07:28:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64643 to 62167. [2020-12-09 07:28:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62167 states. [2020-12-09 07:28:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62167 states to 62167 states and 97130 transitions. [2020-12-09 07:28:29,204 INFO L78 Accepts]: Start accepts. Automaton has 62167 states and 97130 transitions. Word has length 51 [2020-12-09 07:28:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:29,205 INFO L481 AbstractCegarLoop]: Abstraction has 62167 states and 97130 transitions. [2020-12-09 07:28:29,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:28:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 62167 states and 97130 transitions. [2020-12-09 07:28:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-09 07:28:29,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:29,206 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:29,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 07:28:29,206 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1545744311, now seen corresponding path program 1 times [2020-12-09 07:28:29,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:29,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917748822] [2020-12-09 07:28:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:28:29,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917748822] [2020-12-09 07:28:29,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:29,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:29,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564327019] [2020-12-09 07:28:29,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:29,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:29,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:29,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:29,252 INFO L87 Difference]: Start difference. First operand 62167 states and 97130 transitions. Second operand 3 states. [2020-12-09 07:28:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:30,551 INFO L93 Difference]: Finished difference Result 124182 states and 194017 transitions. [2020-12-09 07:28:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:30,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-09 07:28:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:30,629 INFO L225 Difference]: With dead ends: 124182 [2020-12-09 07:28:30,630 INFO L226 Difference]: Without dead ends: 62229 [2020-12-09 07:28:30,664 INFO L677 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 [2020-12-09 07:28:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62229 states. [2020-12-09 07:28:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62229 to 62227. [2020-12-09 07:28:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62227 states. [2020-12-09 07:28:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62227 states to 62227 states and 97190 transitions. [2020-12-09 07:28:31,431 INFO L78 Accepts]: Start accepts. Automaton has 62227 states and 97190 transitions. Word has length 52 [2020-12-09 07:28:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:31,432 INFO L481 AbstractCegarLoop]: Abstraction has 62227 states and 97190 transitions. [2020-12-09 07:28:31,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 62227 states and 97190 transitions. [2020-12-09 07:28:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-09 07:28:31,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:31,436 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 07:28:31,436 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash -645596173, now seen corresponding path program 1 times [2020-12-09 07:28:31,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:31,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535639452] [2020-12-09 07:28:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:28:31,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535639452] [2020-12-09 07:28:31,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:31,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:31,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784392197] [2020-12-09 07:28:31,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:31,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:31,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:31,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:31,614 INFO L87 Difference]: Start difference. First operand 62227 states and 97190 transitions. Second operand 3 states. [2020-12-09 07:28:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:35,285 INFO L93 Difference]: Finished difference Result 113439 states and 176620 transitions. [2020-12-09 07:28:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:35,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-09 07:28:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:35,358 INFO L225 Difference]: With dead ends: 113439 [2020-12-09 07:28:35,359 INFO L226 Difference]: Without dead ends: 63213 [2020-12-09 07:28:35,384 INFO L677 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 [2020-12-09 07:28:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63213 states. [2020-12-09 07:28:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63213 to 61971. [2020-12-09 07:28:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61971 states. [2020-12-09 07:28:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61971 states to 61971 states and 96166 transitions. [2020-12-09 07:28:35,947 INFO L78 Accepts]: Start accepts. Automaton has 61971 states and 96166 transitions. Word has length 57 [2020-12-09 07:28:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:35,947 INFO L481 AbstractCegarLoop]: Abstraction has 61971 states and 96166 transitions. [2020-12-09 07:28:35,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 61971 states and 96166 transitions. [2020-12-09 07:28:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-09 07:28:35,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:35,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:35,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 07:28:35,949 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2088051592, now seen corresponding path program 1 times [2020-12-09 07:28:35,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:35,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301928997] [2020-12-09 07:28:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:36,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301928997] [2020-12-09 07:28:36,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:36,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:36,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488772299] [2020-12-09 07:28:36,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:36,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:36,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:36,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:36,018 INFO L87 Difference]: Start difference. First operand 61971 states and 96166 transitions. Second operand 3 states. [2020-12-09 07:28:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:40,025 INFO L93 Difference]: Finished difference Result 126060 states and 194483 transitions. [2020-12-09 07:28:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:40,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-09 07:28:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:40,107 INFO L225 Difference]: With dead ends: 126060 [2020-12-09 07:28:40,107 INFO L226 Difference]: Without dead ends: 64263 [2020-12-09 07:28:40,143 INFO L677 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 [2020-12-09 07:28:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64263 states. [2020-12-09 07:28:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64263 to 61649. [2020-12-09 07:28:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61649 states. [2020-12-09 07:28:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61649 states to 61649 states and 95448 transitions. [2020-12-09 07:28:40,806 INFO L78 Accepts]: Start accepts. Automaton has 61649 states and 95448 transitions. Word has length 63 [2020-12-09 07:28:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:40,807 INFO L481 AbstractCegarLoop]: Abstraction has 61649 states and 95448 transitions. [2020-12-09 07:28:40,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 61649 states and 95448 transitions. [2020-12-09 07:28:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-09 07:28:40,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:40,808 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:40,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 07:28:40,808 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1015894375, now seen corresponding path program 1 times [2020-12-09 07:28:40,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:40,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588134345] [2020-12-09 07:28:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:40,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588134345] [2020-12-09 07:28:40,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:40,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:40,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842267629] [2020-12-09 07:28:40,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:40,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:40,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:40,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:40,892 INFO L87 Difference]: Start difference. First operand 61649 states and 95448 transitions. Second operand 3 states. [2020-12-09 07:28:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:45,972 INFO L93 Difference]: Finished difference Result 100707 states and 154681 transitions. [2020-12-09 07:28:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:45,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-09 07:28:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:46,063 INFO L225 Difference]: With dead ends: 100707 [2020-12-09 07:28:46,063 INFO L226 Difference]: Without dead ends: 74875 [2020-12-09 07:28:46,087 INFO L677 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 [2020-12-09 07:28:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74875 states. [2020-12-09 07:28:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74875 to 73013. [2020-12-09 07:28:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73013 states. [2020-12-09 07:28:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73013 states to 73013 states and 113173 transitions. [2020-12-09 07:28:46,818 INFO L78 Accepts]: Start accepts. Automaton has 73013 states and 113173 transitions. Word has length 73 [2020-12-09 07:28:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:46,819 INFO L481 AbstractCegarLoop]: Abstraction has 73013 states and 113173 transitions. [2020-12-09 07:28:46,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 73013 states and 113173 transitions. [2020-12-09 07:28:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 07:28:46,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:46,820 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:46,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 07:28:46,820 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1346282361, now seen corresponding path program 1 times [2020-12-09 07:28:46,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:46,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183703998] [2020-12-09 07:28:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:28:46,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183703998] [2020-12-09 07:28:46,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:46,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:46,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865235448] [2020-12-09 07:28:46,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:46,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:46,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:46,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:46,877 INFO L87 Difference]: Start difference. First operand 73013 states and 113173 transitions. Second operand 3 states. [2020-12-09 07:28:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:48,154 INFO L93 Difference]: Finished difference Result 141046 states and 218636 transitions. [2020-12-09 07:28:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:48,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 07:28:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:48,359 INFO L225 Difference]: With dead ends: 141046 [2020-12-09 07:28:48,359 INFO L226 Difference]: Without dead ends: 68432 [2020-12-09 07:28:48,379 INFO L677 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 [2020-12-09 07:28:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68432 states. [2020-12-09 07:28:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68432 to 68430. [2020-12-09 07:28:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68430 states. [2020-12-09 07:28:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68430 states to 68430 states and 106020 transitions. [2020-12-09 07:28:49,016 INFO L78 Accepts]: Start accepts. Automaton has 68430 states and 106020 transitions. Word has length 80 [2020-12-09 07:28:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:49,016 INFO L481 AbstractCegarLoop]: Abstraction has 68430 states and 106020 transitions. [2020-12-09 07:28:49,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 68430 states and 106020 transitions. [2020-12-09 07:28:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 07:28:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:49,018 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:49,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 07:28:49,018 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1309827596, now seen corresponding path program 1 times [2020-12-09 07:28:49,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:49,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096098848] [2020-12-09 07:28:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:28:49,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096098848] [2020-12-09 07:28:49,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:49,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:28:49,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903136780] [2020-12-09 07:28:49,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:28:49,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:49,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:28:49,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:28:49,137 INFO L87 Difference]: Start difference. First operand 68430 states and 106020 transitions. Second operand 3 states. [2020-12-09 07:28:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:50,668 INFO L93 Difference]: Finished difference Result 136167 states and 210969 transitions. [2020-12-09 07:28:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:28:50,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-09 07:28:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:50,826 INFO L225 Difference]: With dead ends: 136167 [2020-12-09 07:28:50,826 INFO L226 Difference]: Without dead ends: 68528 [2020-12-09 07:28:50,843 INFO L677 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 [2020-12-09 07:28:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68528 states. [2020-12-09 07:28:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68528 to 68526. [2020-12-09 07:28:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68526 states. [2020-12-09 07:28:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68526 states to 68526 states and 106116 transitions. [2020-12-09 07:28:51,468 INFO L78 Accepts]: Start accepts. Automaton has 68526 states and 106116 transitions. Word has length 83 [2020-12-09 07:28:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:51,468 INFO L481 AbstractCegarLoop]: Abstraction has 68526 states and 106116 transitions. [2020-12-09 07:28:51,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:28:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 68526 states and 106116 transitions. [2020-12-09 07:28:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-09 07:28:51,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:51,470 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:51,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 07:28:51,470 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:51,470 INFO L82 PathProgramCache]: Analyzing trace with hash -557086491, now seen corresponding path program 1 times [2020-12-09 07:28:51,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:51,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651770249] [2020-12-09 07:28:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:51,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651770249] [2020-12-09 07:28:51,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:51,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:28:51,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301395457] [2020-12-09 07:28:51,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:28:51,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:51,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:28:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:28:51,667 INFO L87 Difference]: Start difference. First operand 68526 states and 106116 transitions. Second operand 4 states. [2020-12-09 07:28:56,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:28:56,530 INFO L93 Difference]: Finished difference Result 93508 states and 143767 transitions. [2020-12-09 07:28:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:28:56,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-09 07:28:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:28:56,578 INFO L225 Difference]: With dead ends: 93508 [2020-12-09 07:28:56,578 INFO L226 Difference]: Without dead ends: 47079 [2020-12-09 07:28:56,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:28:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47079 states. [2020-12-09 07:28:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47079 to 45904. [2020-12-09 07:28:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45904 states. [2020-12-09 07:28:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45904 states to 45904 states and 70305 transitions. [2020-12-09 07:28:56,994 INFO L78 Accepts]: Start accepts. Automaton has 45904 states and 70305 transitions. Word has length 87 [2020-12-09 07:28:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:28:56,994 INFO L481 AbstractCegarLoop]: Abstraction has 45904 states and 70305 transitions. [2020-12-09 07:28:56,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:28:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 45904 states and 70305 transitions. [2020-12-09 07:28:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 07:28:56,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:28:56,996 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:28:56,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 07:28:56,996 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:28:56,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:28:56,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1865533877, now seen corresponding path program 1 times [2020-12-09 07:28:56,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:28:56,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110924127] [2020-12-09 07:28:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:28:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:28:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:28:57,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110924127] [2020-12-09 07:28:57,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:28:57,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:28:57,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337819852] [2020-12-09 07:28:57,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:28:57,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:28:57,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:28:57,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:28:57,091 INFO L87 Difference]: Start difference. First operand 45904 states and 70305 transitions. Second operand 4 states. [2020-12-09 07:29:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:01,850 INFO L93 Difference]: Finished difference Result 59446 states and 89958 transitions. [2020-12-09 07:29:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:29:01,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-09 07:29:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:01,888 INFO L225 Difference]: With dead ends: 59446 [2020-12-09 07:29:01,888 INFO L226 Difference]: Without dead ends: 35779 [2020-12-09 07:29:01,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:29:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35779 states. [2020-12-09 07:29:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35779 to 34604. [2020-12-09 07:29:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34604 states. [2020-12-09 07:29:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34604 states to 34604 states and 52783 transitions. [2020-12-09 07:29:02,246 INFO L78 Accepts]: Start accepts. Automaton has 34604 states and 52783 transitions. Word has length 89 [2020-12-09 07:29:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:02,246 INFO L481 AbstractCegarLoop]: Abstraction has 34604 states and 52783 transitions. [2020-12-09 07:29:02,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:29:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 34604 states and 52783 transitions. [2020-12-09 07:29:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 07:29:02,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:02,248 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:02,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-09 07:29:02,248 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1292572411, now seen corresponding path program 1 times [2020-12-09 07:29:02,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:02,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513228230] [2020-12-09 07:29:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:29:02,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513228230] [2020-12-09 07:29:02,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:02,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:02,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921383308] [2020-12-09 07:29:02,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:02,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:02,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:02,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:02,301 INFO L87 Difference]: Start difference. First operand 34604 states and 52783 transitions. Second operand 3 states. [2020-12-09 07:29:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:03,339 INFO L93 Difference]: Finished difference Result 35773 states and 54506 transitions. [2020-12-09 07:29:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:03,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-09 07:29:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:03,379 INFO L225 Difference]: With dead ends: 35773 [2020-12-09 07:29:03,380 INFO L226 Difference]: Without dead ends: 35771 [2020-12-09 07:29:03,387 INFO L677 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 [2020-12-09 07:29:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35771 states. [2020-12-09 07:29:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35771 to 35769. [2020-12-09 07:29:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35769 states. [2020-12-09 07:29:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35769 states to 35769 states and 54492 transitions. [2020-12-09 07:29:03,712 INFO L78 Accepts]: Start accepts. Automaton has 35769 states and 54492 transitions. Word has length 97 [2020-12-09 07:29:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 35769 states and 54492 transitions. [2020-12-09 07:29:03,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 35769 states and 54492 transitions. [2020-12-09 07:29:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 07:29:03,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:03,714 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:03,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-09 07:29:03,714 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:03,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1863744109, now seen corresponding path program 1 times [2020-12-09 07:29:03,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:03,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449624553] [2020-12-09 07:29:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:29:03,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449624553] [2020-12-09 07:29:03,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:03,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:03,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800370191] [2020-12-09 07:29:03,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:03,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:03,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:03,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:03,761 INFO L87 Difference]: Start difference. First operand 35769 states and 54492 transitions. Second operand 3 states. [2020-12-09 07:29:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:05,196 INFO L93 Difference]: Finished difference Result 60063 states and 91307 transitions. [2020-12-09 07:29:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:05,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 07:29:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:05,235 INFO L225 Difference]: With dead ends: 60063 [2020-12-09 07:29:05,235 INFO L226 Difference]: Without dead ends: 35465 [2020-12-09 07:29:05,251 INFO L677 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 [2020-12-09 07:29:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35465 states. [2020-12-09 07:29:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35465 to 35465. [2020-12-09 07:29:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35465 states. [2020-12-09 07:29:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35465 states to 35465 states and 53730 transitions. [2020-12-09 07:29:05,567 INFO L78 Accepts]: Start accepts. Automaton has 35465 states and 53730 transitions. Word has length 98 [2020-12-09 07:29:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:05,567 INFO L481 AbstractCegarLoop]: Abstraction has 35465 states and 53730 transitions. [2020-12-09 07:29:05,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 35465 states and 53730 transitions. [2020-12-09 07:29:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 07:29:05,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:05,570 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:05,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 07:29:05,570 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:05,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:05,570 INFO L82 PathProgramCache]: Analyzing trace with hash -756484602, now seen corresponding path program 1 times [2020-12-09 07:29:05,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:05,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305882355] [2020-12-09 07:29:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:29:05,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305882355] [2020-12-09 07:29:05,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:05,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:05,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593868349] [2020-12-09 07:29:05,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:05,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:05,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:05,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:05,624 INFO L87 Difference]: Start difference. First operand 35465 states and 53730 transitions. Second operand 3 states. [2020-12-09 07:29:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:06,548 INFO L93 Difference]: Finished difference Result 59166 states and 89308 transitions. [2020-12-09 07:29:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:06,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-09 07:29:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:06,577 INFO L225 Difference]: With dead ends: 59166 [2020-12-09 07:29:06,577 INFO L226 Difference]: Without dead ends: 25645 [2020-12-09 07:29:06,594 INFO L677 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 [2020-12-09 07:29:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25645 states. [2020-12-09 07:29:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25645 to 25643. [2020-12-09 07:29:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25643 states. [2020-12-09 07:29:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25643 states to 25643 states and 38422 transitions. [2020-12-09 07:29:06,903 INFO L78 Accepts]: Start accepts. Automaton has 25643 states and 38422 transitions. Word has length 113 [2020-12-09 07:29:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:06,903 INFO L481 AbstractCegarLoop]: Abstraction has 25643 states and 38422 transitions. [2020-12-09 07:29:06,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 25643 states and 38422 transitions. [2020-12-09 07:29:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-09 07:29:06,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:06,905 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 07:29:06,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-09 07:29:06,905 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:06,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1141324682, now seen corresponding path program 1 times [2020-12-09 07:29:06,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:06,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045652338] [2020-12-09 07:29:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-09 07:29:07,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045652338] [2020-12-09 07:29:07,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:07,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:07,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101509386] [2020-12-09 07:29:07,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:07,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:07,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:07,021 INFO L87 Difference]: Start difference. First operand 25643 states and 38422 transitions. Second operand 3 states. [2020-12-09 07:29:10,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:10,548 INFO L93 Difference]: Finished difference Result 33551 states and 49402 transitions. [2020-12-09 07:29:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:10,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-09 07:29:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:10,572 INFO L225 Difference]: With dead ends: 33551 [2020-12-09 07:29:10,572 INFO L226 Difference]: Without dead ends: 26562 [2020-12-09 07:29:10,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26562 states. [2020-12-09 07:29:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26562 to 19328. [2020-12-09 07:29:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19328 states. [2020-12-09 07:29:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19328 states to 19328 states and 28680 transitions. [2020-12-09 07:29:10,753 INFO L78 Accepts]: Start accepts. Automaton has 19328 states and 28680 transitions. Word has length 117 [2020-12-09 07:29:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:10,754 INFO L481 AbstractCegarLoop]: Abstraction has 19328 states and 28680 transitions. [2020-12-09 07:29:10,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 19328 states and 28680 transitions. [2020-12-09 07:29:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-09 07:29:10,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:10,755 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:10,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-09 07:29:10,756 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 573768167, now seen corresponding path program 1 times [2020-12-09 07:29:10,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:10,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260399318] [2020-12-09 07:29:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:29:10,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260399318] [2020-12-09 07:29:10,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:10,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:10,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861194204] [2020-12-09 07:29:10,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:10,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:10,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:10,816 INFO L87 Difference]: Start difference. First operand 19328 states and 28680 transitions. Second operand 3 states. [2020-12-09 07:29:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:11,604 INFO L93 Difference]: Finished difference Result 35711 states and 53071 transitions. [2020-12-09 07:29:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:11,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-12-09 07:29:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:11,623 INFO L225 Difference]: With dead ends: 35711 [2020-12-09 07:29:11,623 INFO L226 Difference]: Without dead ends: 17727 [2020-12-09 07:29:11,633 INFO L677 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 [2020-12-09 07:29:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17727 states. [2020-12-09 07:29:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17727 to 17725. [2020-12-09 07:29:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17725 states. [2020-12-09 07:29:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17725 states to 17725 states and 26300 transitions. [2020-12-09 07:29:11,798 INFO L78 Accepts]: Start accepts. Automaton has 17725 states and 26300 transitions. Word has length 135 [2020-12-09 07:29:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:11,799 INFO L481 AbstractCegarLoop]: Abstraction has 17725 states and 26300 transitions. [2020-12-09 07:29:11,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 17725 states and 26300 transitions. [2020-12-09 07:29:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-09 07:29:11,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:11,801 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:11,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-09 07:29:11,801 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:11,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1953273572, now seen corresponding path program 1 times [2020-12-09 07:29:11,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:11,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630667003] [2020-12-09 07:29:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:29:11,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630667003] [2020-12-09 07:29:11,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:11,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:11,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35163859] [2020-12-09 07:29:11,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:11,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:11,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:11,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:11,864 INFO L87 Difference]: Start difference. First operand 17725 states and 26300 transitions. Second operand 3 states. [2020-12-09 07:29:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:12,592 INFO L93 Difference]: Finished difference Result 28899 states and 42827 transitions. [2020-12-09 07:29:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:12,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-09 07:29:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:12,604 INFO L225 Difference]: With dead ends: 28899 [2020-12-09 07:29:12,605 INFO L226 Difference]: Without dead ends: 12905 [2020-12-09 07:29:12,614 INFO L677 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 [2020-12-09 07:29:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12905 states. [2020-12-09 07:29:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12905 to 12903. [2020-12-09 07:29:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12903 states. [2020-12-09 07:29:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12903 states to 12903 states and 18993 transitions. [2020-12-09 07:29:12,735 INFO L78 Accepts]: Start accepts. Automaton has 12903 states and 18993 transitions. Word has length 137 [2020-12-09 07:29:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:12,736 INFO L481 AbstractCegarLoop]: Abstraction has 12903 states and 18993 transitions. [2020-12-09 07:29:12,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 12903 states and 18993 transitions. [2020-12-09 07:29:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-09 07:29:12,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:12,738 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:12,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-09 07:29:12,738 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash 372632353, now seen corresponding path program 1 times [2020-12-09 07:29:12,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:12,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314920782] [2020-12-09 07:29:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:29:12,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314920782] [2020-12-09 07:29:12,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:12,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:12,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485089129] [2020-12-09 07:29:12,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:12,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:12,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:12,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:12,831 INFO L87 Difference]: Start difference. First operand 12903 states and 18993 transitions. Second operand 3 states. [2020-12-09 07:29:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:13,626 INFO L93 Difference]: Finished difference Result 23249 states and 34300 transitions. [2020-12-09 07:29:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:13,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-09 07:29:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:13,637 INFO L225 Difference]: With dead ends: 23249 [2020-12-09 07:29:13,637 INFO L226 Difference]: Without dead ends: 12270 [2020-12-09 07:29:13,644 INFO L677 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 [2020-12-09 07:29:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12270 states. [2020-12-09 07:29:13,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12270 to 12268. [2020-12-09 07:29:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12268 states. [2020-12-09 07:29:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12268 states to 12268 states and 18043 transitions. [2020-12-09 07:29:13,748 INFO L78 Accepts]: Start accepts. Automaton has 12268 states and 18043 transitions. Word has length 143 [2020-12-09 07:29:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:13,748 INFO L481 AbstractCegarLoop]: Abstraction has 12268 states and 18043 transitions. [2020-12-09 07:29:13,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12268 states and 18043 transitions. [2020-12-09 07:29:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-09 07:29:13,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:13,750 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:13,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-09 07:29:13,750 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:13,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1357924710, now seen corresponding path program 1 times [2020-12-09 07:29:13,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:13,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990204867] [2020-12-09 07:29:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:29:13,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990204867] [2020-12-09 07:29:13,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:13,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:13,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612745114] [2020-12-09 07:29:13,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:13,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:13,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:13,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:13,812 INFO L87 Difference]: Start difference. First operand 12268 states and 18043 transitions. Second operand 3 states. [2020-12-09 07:29:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:14,546 INFO L93 Difference]: Finished difference Result 22644 states and 33374 transitions. [2020-12-09 07:29:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:14,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-09 07:29:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:14,557 INFO L225 Difference]: With dead ends: 22644 [2020-12-09 07:29:14,558 INFO L226 Difference]: Without dead ends: 12300 [2020-12-09 07:29:14,564 INFO L677 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 [2020-12-09 07:29:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12300 states. [2020-12-09 07:29:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12300 to 12298. [2020-12-09 07:29:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12298 states. [2020-12-09 07:29:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12298 states to 12298 states and 18073 transitions. [2020-12-09 07:29:14,670 INFO L78 Accepts]: Start accepts. Automaton has 12298 states and 18073 transitions. Word has length 147 [2020-12-09 07:29:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:14,670 INFO L481 AbstractCegarLoop]: Abstraction has 12298 states and 18073 transitions. [2020-12-09 07:29:14,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12298 states and 18073 transitions. [2020-12-09 07:29:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-09 07:29:14,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:14,673 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:14,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-09 07:29:14,674 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1695360865, now seen corresponding path program 1 times [2020-12-09 07:29:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:14,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371833765] [2020-12-09 07:29:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:29:14,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371833765] [2020-12-09 07:29:14,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:14,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:14,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056454030] [2020-12-09 07:29:14,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:14,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:14,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:14,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:14,752 INFO L87 Difference]: Start difference. First operand 12298 states and 18073 transitions. Second operand 3 states. [2020-12-09 07:29:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:15,375 INFO L93 Difference]: Finished difference Result 20372 states and 30014 transitions. [2020-12-09 07:29:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:15,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-12-09 07:29:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:15,384 INFO L225 Difference]: With dead ends: 20372 [2020-12-09 07:29:15,385 INFO L226 Difference]: Without dead ends: 9998 [2020-12-09 07:29:15,390 INFO L677 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 [2020-12-09 07:29:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9998 states. [2020-12-09 07:29:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9998 to 9996. [2020-12-09 07:29:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9996 states. [2020-12-09 07:29:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 14675 transitions. [2020-12-09 07:29:15,507 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 14675 transitions. Word has length 177 [2020-12-09 07:29:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:15,508 INFO L481 AbstractCegarLoop]: Abstraction has 9996 states and 14675 transitions. [2020-12-09 07:29:15,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 14675 transitions. [2020-12-09 07:29:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-09 07:29:15,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:15,510 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:15,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-09 07:29:15,510 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash 781182402, now seen corresponding path program 1 times [2020-12-09 07:29:15,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:15,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564014064] [2020-12-09 07:29:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:29:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:29:15,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564014064] [2020-12-09 07:29:15,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:29:15,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:29:15,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707016215] [2020-12-09 07:29:15,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:29:15,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:29:15,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:29:15,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:29:15,592 INFO L87 Difference]: Start difference. First operand 9996 states and 14675 transitions. Second operand 3 states. [2020-12-09 07:29:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:29:15,855 INFO L93 Difference]: Finished difference Result 10398 states and 15236 transitions. [2020-12-09 07:29:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:29:15,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-12-09 07:29:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:29:15,858 INFO L225 Difference]: With dead ends: 10398 [2020-12-09 07:29:15,858 INFO L226 Difference]: Without dead ends: 2332 [2020-12-09 07:29:15,861 INFO L677 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 [2020-12-09 07:29:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2020-12-09 07:29:15,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2330. [2020-12-09 07:29:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2020-12-09 07:29:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3310 transitions. [2020-12-09 07:29:15,880 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3310 transitions. Word has length 182 [2020-12-09 07:29:15,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:29:15,880 INFO L481 AbstractCegarLoop]: Abstraction has 2330 states and 3310 transitions. [2020-12-09 07:29:15,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:29:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3310 transitions. [2020-12-09 07:29:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-12-09 07:29:15,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:29:15,883 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:29:15,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-09 07:29:15,883 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:29:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:29:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1019673503, now seen corresponding path program 1 times [2020-12-09 07:29:15,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:29:15,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789817063] [2020-12-09 07:29:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:29:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:29:15,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:29:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:29:16,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:29:16,149 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:29:16,149 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:29:16,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-09 07:29:16,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:29:16 BoogieIcfgContainer [2020-12-09 07:29:16,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:29:16,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:29:16,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:29:16,287 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:29:16,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:27:53" (3/4) ... [2020-12-09 07:29:16,289 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:29:16,460 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_feeb80ed-30eb-4f53-89c9-5080de6c9b47/bin/utaipan/witness.graphml [2020-12-09 07:29:16,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:29:16,461 INFO L168 Benchmark]: Toolchain (without parser) took 99039.62 ms. Allocated memory was 117.4 MB in the beginning and 3.9 GB in the end (delta: 3.8 GB). Free memory was 61.9 MB in the beginning and 1.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.3 GB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,462 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 73.4 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:29:16,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2027.85 ms. Allocated memory was 117.4 MB in the beginning and 348.1 MB in the end (delta: 230.7 MB). Free memory was 61.8 MB in the beginning and 138.3 MB in the end (delta: -76.5 MB). Peak memory consumption was 201.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 615.56 ms. Allocated memory was 348.1 MB in the beginning and 696.3 MB in the end (delta: 348.1 MB). Free memory was 138.3 MB in the beginning and 472.7 MB in the end (delta: -334.4 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,463 INFO L168 Benchmark]: Boogie Preprocessor took 690.16 ms. Allocated memory is still 696.3 MB. Free memory was 472.7 MB in the beginning and 335.3 MB in the end (delta: 137.4 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,463 INFO L168 Benchmark]: RCFGBuilder took 12793.66 ms. Allocated memory was 696.3 MB in the beginning and 2.4 GB in the end (delta: 1.7 GB). Free memory was 335.3 MB in the beginning and 1.1 GB in the end (delta: -741.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,464 INFO L168 Benchmark]: TraceAbstraction took 82731.42 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -483.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,464 INFO L168 Benchmark]: Witness Printer took 173.51 ms. Allocated memory is still 3.9 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:29:16,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 73.4 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2027.85 ms. Allocated memory was 117.4 MB in the beginning and 348.1 MB in the end (delta: 230.7 MB). Free memory was 61.8 MB in the beginning and 138.3 MB in the end (delta: -76.5 MB). Peak memory consumption was 201.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 615.56 ms. Allocated memory was 348.1 MB in the beginning and 696.3 MB in the end (delta: 348.1 MB). Free memory was 138.3 MB in the beginning and 472.7 MB in the end (delta: -334.4 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 690.16 ms. Allocated memory is still 696.3 MB. Free memory was 472.7 MB in the beginning and 335.3 MB in the end (delta: 137.4 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12793.66 ms. Allocated memory was 696.3 MB in the beginning and 2.4 GB in the end (delta: 1.7 GB). Free memory was 335.3 MB in the beginning and 1.1 GB in the end (delta: -741.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. * TraceAbstraction took 82731.42 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -483.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. * Witness Printer took 173.51 ms. Allocated memory is still 3.9 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 49140]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] int m_getInetAddress = 1; [L8] int m_getOOBInline = 2; [L9] int m_getLocalPort = 3; [L10] int m_isInputShutdown = 4; [L11] int m_setTcpNoDelay = 5; [L12] int m_isConnected = 6; [L13] int m_getKeepAlive = 7; [L14] int m_getLocalAddress = 8; [L15] int m_bind = 9; [L16] int m_getChannel = 10; [L17] int m_getSoLinger = 11; [L18] int m_getImpl = 12; [L19] int m_getTcpNoDelay = 13; [L20] int m_getSoTimeout = 14; [L21] int m_isOutputShutdown = 15; [L22] int m_postAccept = 16; [L23] int m_close = 17; [L24] int m_setOOBInline = 18; [L25] int m_getLocalSocketAddress = 19; [L26] int m_getReceiveBufferSize = 20; [L27] int m_setReuseAddress = 21; [L28] int m_getTrafficClass = 22; [L29] int m_getReuseAddress = 23; [L30] int m_createImpl = 24; [L31] int m_setCreated = 25; [L32] int m_setKeepAlive = 26; [L33] int m_getInputStream = 27; [L34] int m_shutdownOutput = 28; [L35] int m_shutdownInput = 29; [L36] int m_setPerformancePreferences = 30; [L37] int m_getPort = 31; [L38] int m_sendUrgentData = 32; [L39] int m_isClosed = 33; [L40] int m_isBound = 34; [L41] int m_setBound = 35; [L42] int m_getSendBufferSize = 36; [L43] int m_getOutputStream = 37; [L44] int m_setConnected = 38; [L45] int m_Socket = 39; [L46] int m_getRemoteSocketAddress = 40; [L47] int m_setReceiveBufferSize_1 = 41; [L48] int m_setReceiveBufferSize_2 = 42; [L49] int m_connect2_1 = 43; [L50] int m_connect2_2 = 44; [L51] int m_setSoLinger_1 = 45; [L52] int m_setSoLinger_2 = 46; [L53] int m_connect1_1 = 47; [L54] int m_connect1_2 = 48; [L55] int m_setTrafficClass_1 = 49; [L56] int m_setTrafficClass_2 = 50; [L57] int m_setSoTimeout_1 = 51; [L58] int m_setSoTimeout_2 = 52; [L59] int m_setSendBufferSize_1 = 53; [L60] int m_setSendBufferSize_2 = 54; [L61] int m_setSocketImplFactory_1 = 55; [L62] int m_setSocketImplFactory_2 = 56; [L67] int q = 0; [L68] int method_id; [L71] int this_oldImpl = 0; [L72] int this_factory = 0; [L73] int this_shutOut = 0; [L74] int this_created = 0; [L75] int this_shutIn = 0; [L76] int this_closed = 0; [L77] int this_bound = 0; [L78] int this_impl = 1; [L79] int this_connected = 0; VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND TRUE q == 0 [L119] COND TRUE __VERIFIER_nondet_int() [L123] method_id = 39 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L125] COND FALSE !(0) [L129] q = 2 [L131] this_factory=0 [L131] this_shutIn=0 [L131] this_connected=0 [L131] this_closed=0 [L131] this_shutOut=0 [L131] this_created=0 [L131] this_impl=1 [L131] this_bound=0 [L131] this_oldImpl=0 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND FALSE !(q == 0) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L138] COND FALSE !(q == 1) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L750] COND TRUE q == 2 [L751] COND FALSE !(__VERIFIER_nondet_int()) [L767] COND FALSE !(__VERIFIER_nondet_int()) [L783] COND FALSE !(__VERIFIER_nondet_int()) [L799] COND FALSE !(__VERIFIER_nondet_int()) [L815] COND FALSE !(__VERIFIER_nondet_int()) [L831] COND FALSE !(__VERIFIER_nondet_int()) [L847] COND FALSE !(__VERIFIER_nondet_int()) [L863] COND FALSE !(__VERIFIER_nondet_int()) [L879] COND FALSE !(__VERIFIER_nondet_int()) [L895] COND FALSE !(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L927] COND FALSE !(__VERIFIER_nondet_int()) [L943] COND FALSE !(__VERIFIER_nondet_int()) [L959] COND FALSE !(__VERIFIER_nondet_int()) [L975] COND FALSE !(__VERIFIER_nondet_int()) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1007] COND FALSE !(__VERIFIER_nondet_int()) [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1039] COND FALSE !(__VERIFIER_nondet_int()) [L1055] COND FALSE !(__VERIFIER_nondet_int()) [L1071] COND FALSE !(__VERIFIER_nondet_int()) [L1087] COND FALSE !(__VERIFIER_nondet_int()) [L1103] COND FALSE !(__VERIFIER_nondet_int()) [L1119] COND FALSE !(__VERIFIER_nondet_int()) [L1135] COND FALSE !(__VERIFIER_nondet_int()) [L1151] COND FALSE !(__VERIFIER_nondet_int()) [L1167] COND FALSE !(__VERIFIER_nondet_int()) [L1183] COND FALSE !(__VERIFIER_nondet_int()) [L1199] COND FALSE !(__VERIFIER_nondet_int()) [L1215] COND FALSE !(__VERIFIER_nondet_int()) [L1231] COND FALSE !(__VERIFIER_nondet_int()) [L1247] COND FALSE !(__VERIFIER_nondet_int()) [L1263] COND FALSE !(__VERIFIER_nondet_int()) [L1279] COND FALSE !(__VERIFIER_nondet_int()) [L1295] COND FALSE !(__VERIFIER_nondet_int()) [L1311] COND FALSE !(__VERIFIER_nondet_int()) [L1327] COND FALSE !(__VERIFIER_nondet_int()) [L1343] COND FALSE !(__VERIFIER_nondet_int()) [L1359] COND FALSE !(__VERIFIER_nondet_int()) [L1375] COND FALSE !(__VERIFIER_nondet_int()) [L1391] COND FALSE !(__VERIFIER_nondet_int()) [L1407] COND FALSE !(__VERIFIER_nondet_int()) [L1423] COND FALSE !(__VERIFIER_nondet_int()) [L1439] COND FALSE !(__VERIFIER_nondet_int()) [L1455] COND FALSE !(__VERIFIER_nondet_int()) [L1471] COND FALSE !(__VERIFIER_nondet_int()) [L1487] COND FALSE !(__VERIFIER_nondet_int()) [L1503] COND FALSE !(__VERIFIER_nondet_int()) [L1519] COND FALSE !(__VERIFIER_nondet_int()) [L1535] COND FALSE !(__VERIFIER_nondet_int()) [L1551] COND FALSE !(__VERIFIER_nondet_int()) [L1567] COND FALSE !(__VERIFIER_nondet_int()) [L1583] COND FALSE !(__VERIFIER_nondet_int()) [L1599] COND FALSE !(__VERIFIER_nondet_int()) [L1615] COND FALSE !(__VERIFIER_nondet_int()) [L1631] COND FALSE !(__VERIFIER_nondet_int()) [L1647] COND FALSE !(__VERIFIER_nondet_int()) [L1663] COND FALSE !(__VERIFIER_nondet_int()) [L1679] COND FALSE !(__VERIFIER_nondet_int()) [L1695] COND FALSE !(__VERIFIER_nondet_int()) [L1711] COND FALSE !(__VERIFIER_nondet_int()) [L1727] COND FALSE !(__VERIFIER_nondet_int()) [L1743] COND FALSE !(__VERIFIER_nondet_int()) [L1759] COND FALSE !(__VERIFIER_nondet_int()) [L1775] COND FALSE !(__VERIFIER_nondet_int()) [L1791] COND FALSE !(__VERIFIER_nondet_int()) [L1807] COND FALSE !(__VERIFIER_nondet_int()) [L1823] COND FALSE !(__VERIFIER_nondet_int()) [L1839] COND FALSE !(__VERIFIER_nondet_int()) [L1855] COND FALSE !(__VERIFIER_nondet_int()) [L1871] COND FALSE !(__VERIFIER_nondet_int()) [L1887] COND FALSE !(__VERIFIER_nondet_int()) [L1903] COND FALSE !(__VERIFIER_nondet_int()) [L1919] COND FALSE !(__VERIFIER_nondet_int()) [L1935] COND FALSE !(__VERIFIER_nondet_int()) [L1951] COND FALSE !(__VERIFIER_nondet_int()) [L1967] COND FALSE !(__VERIFIER_nondet_int()) [L1983] COND FALSE !(__VERIFIER_nondet_int()) [L1999] COND FALSE !(__VERIFIER_nondet_int()) [L2015] COND FALSE !(__VERIFIER_nondet_int()) [L2031] COND FALSE !(__VERIFIER_nondet_int()) [L2047] COND FALSE !(__VERIFIER_nondet_int()) [L2063] COND FALSE !(__VERIFIER_nondet_int()) [L2079] COND TRUE __VERIFIER_nondet_int() [L2081] COND TRUE !(P1 != 0) [L2083] method_id = 56 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L2085] COND FALSE !(((this_factory != 0) && !(P30 != 0))) [L2089] q = 2 [L2091] this_factory=P30 [L2091] this_shutIn=this_shutIn [L2091] this_connected=this_connected [L2091] this_closed=this_closed [L2091] this_shutOut=this_shutOut [L2091] this_created=this_created [L2091] this_impl=this_impl [L2091] this_bound=this_bound [L2091] this_oldImpl=this_oldImpl VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND FALSE !(q == 0) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L138] COND FALSE !(q == 1) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L750] COND TRUE q == 2 [L751] COND FALSE !(__VERIFIER_nondet_int()) [L767] COND FALSE !(__VERIFIER_nondet_int()) [L783] COND FALSE !(__VERIFIER_nondet_int()) [L799] COND FALSE !(__VERIFIER_nondet_int()) [L815] COND FALSE !(__VERIFIER_nondet_int()) [L831] COND FALSE !(__VERIFIER_nondet_int()) [L847] COND FALSE !(__VERIFIER_nondet_int()) [L863] COND FALSE !(__VERIFIER_nondet_int()) [L879] COND FALSE !(__VERIFIER_nondet_int()) [L895] COND FALSE !(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L927] COND FALSE !(__VERIFIER_nondet_int()) [L943] COND FALSE !(__VERIFIER_nondet_int()) [L959] COND FALSE !(__VERIFIER_nondet_int()) [L975] COND FALSE !(__VERIFIER_nondet_int()) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1007] COND FALSE !(__VERIFIER_nondet_int()) [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1039] COND FALSE !(__VERIFIER_nondet_int()) [L1055] COND FALSE !(__VERIFIER_nondet_int()) [L1071] COND FALSE !(__VERIFIER_nondet_int()) [L1087] COND FALSE !(__VERIFIER_nondet_int()) [L1103] COND FALSE !(__VERIFIER_nondet_int()) [L1119] COND FALSE !(__VERIFIER_nondet_int()) [L1135] COND FALSE !(__VERIFIER_nondet_int()) [L1151] COND FALSE !(__VERIFIER_nondet_int()) [L1167] COND FALSE !(__VERIFIER_nondet_int()) [L1183] COND FALSE !(__VERIFIER_nondet_int()) [L1199] COND FALSE !(__VERIFIER_nondet_int()) [L1215] COND FALSE !(__VERIFIER_nondet_int()) [L1231] COND FALSE !(__VERIFIER_nondet_int()) [L1247] COND FALSE !(__VERIFIER_nondet_int()) [L1263] COND FALSE !(__VERIFIER_nondet_int()) [L1279] COND FALSE !(__VERIFIER_nondet_int()) [L1295] COND FALSE !(__VERIFIER_nondet_int()) [L1311] COND FALSE !(__VERIFIER_nondet_int()) [L1327] COND FALSE !(__VERIFIER_nondet_int()) [L1343] COND FALSE !(__VERIFIER_nondet_int()) [L1359] COND FALSE !(__VERIFIER_nondet_int()) [L1375] COND FALSE !(__VERIFIER_nondet_int()) [L1391] COND FALSE !(__VERIFIER_nondet_int()) [L1407] COND FALSE !(__VERIFIER_nondet_int()) [L1423] COND FALSE !(__VERIFIER_nondet_int()) [L1439] COND FALSE !(__VERIFIER_nondet_int()) [L1455] COND FALSE !(__VERIFIER_nondet_int()) [L1471] COND FALSE !(__VERIFIER_nondet_int()) [L1487] COND FALSE !(__VERIFIER_nondet_int()) [L1503] COND FALSE !(__VERIFIER_nondet_int()) [L1519] COND FALSE !(__VERIFIER_nondet_int()) [L1535] COND FALSE !(__VERIFIER_nondet_int()) [L1551] COND FALSE !(__VERIFIER_nondet_int()) [L1567] COND FALSE !(__VERIFIER_nondet_int()) [L1583] COND FALSE !(__VERIFIER_nondet_int()) [L1599] COND FALSE !(__VERIFIER_nondet_int()) [L1615] COND FALSE !(__VERIFIER_nondet_int()) [L1631] COND FALSE !(__VERIFIER_nondet_int()) [L1647] COND FALSE !(__VERIFIER_nondet_int()) [L1663] COND FALSE !(__VERIFIER_nondet_int()) [L1679] COND FALSE !(__VERIFIER_nondet_int()) [L1695] COND FALSE !(__VERIFIER_nondet_int()) [L1711] COND FALSE !(__VERIFIER_nondet_int()) [L1727] COND FALSE !(__VERIFIER_nondet_int()) [L1743] COND FALSE !(__VERIFIER_nondet_int()) [L1759] COND FALSE !(__VERIFIER_nondet_int()) [L1775] COND FALSE !(__VERIFIER_nondet_int()) [L1791] COND FALSE !(__VERIFIER_nondet_int()) [L1807] COND FALSE !(__VERIFIER_nondet_int()) [L1823] COND FALSE !(__VERIFIER_nondet_int()) [L1839] COND FALSE !(__VERIFIER_nondet_int()) [L1855] COND FALSE !(__VERIFIER_nondet_int()) [L1871] COND FALSE !(__VERIFIER_nondet_int()) [L1887] COND FALSE !(__VERIFIER_nondet_int()) [L1903] COND FALSE !(__VERIFIER_nondet_int()) [L1919] COND FALSE !(__VERIFIER_nondet_int()) [L1935] COND FALSE !(__VERIFIER_nondet_int()) [L1951] COND FALSE !(__VERIFIER_nondet_int()) [L1967] COND FALSE !(__VERIFIER_nondet_int()) [L1983] COND FALSE !(__VERIFIER_nondet_int()) [L1999] COND FALSE !(__VERIFIER_nondet_int()) [L2015] COND FALSE !(__VERIFIER_nondet_int()) [L2031] COND FALSE !(__VERIFIER_nondet_int()) [L2047] COND FALSE !(__VERIFIER_nondet_int()) [L2063] COND TRUE __VERIFIER_nondet_int() [L2065] COND TRUE (P1 != 0) [L2067] method_id = 55 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L2069] COND TRUE ((this_factory != 0) && (P29 != 0)) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L49140] reach_error() VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9209 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 82.5s, OverallIterations: 30, TraceHistogramMax: 4, AutomataDifference: 69.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 328964 SDtfs, 228282 SDslu, 201738 SDs, 0 SdLazy, 60734 SolverSat, 22954 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73013occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.2s AutomataMinimizationTime, 29 MinimizatonAttempts, 24104 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 2407 NumberOfCodeBlocks, 2407 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2191 ConstructedInterpolants, 0 QuantifiedInterpolants, 650867 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 292/292 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...