./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:47:15,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:47:16,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:47:16,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:47:16,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:47:16,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:47:16,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:47:16,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:47:16,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:47:16,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:47:16,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:47:16,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:47:16,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:47:16,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:47:16,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:47:16,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:47:16,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:47:16,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:47:16,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:47:16,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:47:16,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:47:16,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:47:16,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:47:16,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:47:16,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:47:16,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:47:16,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:47:16,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:47:16,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:47:16,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:47:16,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:47:16,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:47:16,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:47:16,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:47:16,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:47:16,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:47:16,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:47:16,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:47:16,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:47:16,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:47:16,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:47:16,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:47:16,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:47:16,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:47:16,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:47:16,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:47:16,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:47:16,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:47:16,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:47:16,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:47:16,192 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:47:16,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:47:16,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:47:16,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:47:16,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:47:16,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:47:16,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:47:16,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:47:16,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:47:16,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:47:16,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:47:16,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:47:16,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:47:16,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:47:16,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:47:16,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:47:16,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:47:16,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:47:16,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:47:16,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:47:16,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:47:16,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:47:16,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:47:16,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:47:16,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:47:16,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:47:16,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 [2021-11-20 06:47:16,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:47:16,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:47:16,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:47:16,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:47:16,508 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:47:16,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2021-11-20 06:47:16,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/data/f9a6a234c/15e367598e6f45bea890a4490f8e6dd7/FLAG9f7ee3d2e [2021-11-20 06:47:17,279 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:47:17,279 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2021-11-20 06:47:17,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/data/f9a6a234c/15e367598e6f45bea890a4490f8e6dd7/FLAG9f7ee3d2e [2021-11-20 06:47:17,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/data/f9a6a234c/15e367598e6f45bea890a4490f8e6dd7 [2021-11-20 06:47:17,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:47:17,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:47:17,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:47:17,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:47:17,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:47:17,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:47:17" (1/1) ... [2021-11-20 06:47:17,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e6ddd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:17, skipping insertion in model container [2021-11-20 06:47:17,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:47:17" (1/1) ... [2021-11-20 06:47:17,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:47:17,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:47:18,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2021-11-20 06:47:18,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:47:18,209 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:47:18,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2021-11-20 06:47:18,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:47:18,389 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:47:18,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18 WrapperNode [2021-11-20 06:47:18,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:47:18,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:47:18,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:47:18,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:47:18,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,491 INFO L137 Inliner]: procedures = 91, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 928 [2021-11-20 06:47:18,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:47:18,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:47:18,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:47:18,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:47:18,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:47:18,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:47:18,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:47:18,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:47:18,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (1/1) ... [2021-11-20 06:47:18,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:47:18,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:47:18,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:47:18,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:47:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:47:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-11-20 06:47:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-11-20 06:47:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-20 06:47:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-20 06:47:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-20 06:47:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-20 06:47:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-20 06:47:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-20 06:47:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-11-20 06:47:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-11-20 06:47:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-20 06:47:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-20 06:47:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-11-20 06:47:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-11-20 06:47:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-20 06:47:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-20 06:47:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-20 06:47:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-20 06:47:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-20 06:47:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-20 06:47:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-20 06:47:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-20 06:47:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-20 06:47:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-20 06:47:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-20 06:47:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-20 06:47:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-20 06:47:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-20 06:47:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-11-20 06:47:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-11-20 06:47:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-20 06:47:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-20 06:47:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-20 06:47:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-20 06:47:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-11-20 06:47:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-11-20 06:47:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-20 06:47:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-20 06:47:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-20 06:47:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-20 06:47:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-20 06:47:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-20 06:47:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:47:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-20 06:47:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-20 06:47:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-20 06:47:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-20 06:47:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-20 06:47:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-20 06:47:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-20 06:47:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-20 06:47:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:47:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:47:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-20 06:47:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-20 06:47:18,888 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:47:18,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:47:20,222 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:47:20,245 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:47:20,245 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:47:20,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:47:20 BoogieIcfgContainer [2021-11-20 06:47:20,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:47:20,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:47:20,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:47:20,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:47:20,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:47:17" (1/3) ... [2021-11-20 06:47:20,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a99861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:47:20, skipping insertion in model container [2021-11-20 06:47:20,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:47:18" (2/3) ... [2021-11-20 06:47:20,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a99861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:47:20, skipping insertion in model container [2021-11-20 06:47:20,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:47:20" (3/3) ... [2021-11-20 06:47:20,260 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2021-11-20 06:47:20,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:47:20,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:47:20,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:47:20,352 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:47:20,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:47:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 481 states have internal predecessors, (777), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-20 06:47:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-20 06:47:20,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:47:20,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:20,447 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:47:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2006006506, now seen corresponding path program 1 times [2021-11-20 06:47:20,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:20,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207301714] [2021-11-20 06:47:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:20,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:47:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 06:47:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 06:47:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:47:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:47:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:47:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 06:47:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 06:47:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:47:21,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207301714] [2021-11-20 06:47:21,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207301714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:21,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:21,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:47:21,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530465993] [2021-11-20 06:47:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:21,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:47:21,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:47:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:47:21,643 INFO L87 Difference]: Start difference. First operand has 597 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 481 states have internal predecessors, (777), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:47:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:47:30,701 INFO L93 Difference]: Finished difference Result 1554 states and 2682 transitions. [2021-11-20 06:47:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:47:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2021-11-20 06:47:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:47:30,745 INFO L225 Difference]: With dead ends: 1554 [2021-11-20 06:47:30,745 INFO L226 Difference]: Without dead ends: 957 [2021-11-20 06:47:30,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:47:30,767 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 1771 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 5560 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 6135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 5560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:47:30,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 3966 Invalid, 6135 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [575 Valid, 5560 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-20 06:47:30,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-20 06:47:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 600. [2021-11-20 06:47:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 466 states have (on average 1.6695278969957081) internal successors, (778), 484 states have internal predecessors, (778), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2021-11-20 06:47:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 991 transitions. [2021-11-20 06:47:31,114 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 991 transitions. Word has length 99 [2021-11-20 06:47:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:47:31,115 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 991 transitions. [2021-11-20 06:47:31,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:47:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 991 transitions. [2021-11-20 06:47:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 06:47:31,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:47:31,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:31,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:47:31,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:47:31,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2109230418, now seen corresponding path program 1 times [2021-11-20 06:47:31,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:31,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122567635] [2021-11-20 06:47:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:31,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:47:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:47:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 06:47:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:47:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:47:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:47:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 06:47:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:47:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:47:31,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:31,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122567635] [2021-11-20 06:47:31,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122567635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:31,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:31,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:47:31,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30014840] [2021-11-20 06:47:31,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:31,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:47:31,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:47:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:47:31,630 INFO L87 Difference]: Start difference. First operand 600 states and 991 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:47:40,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:47:40,259 INFO L93 Difference]: Finished difference Result 1544 states and 2628 transitions. [2021-11-20 06:47:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:47:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2021-11-20 06:47:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:47:40,271 INFO L225 Difference]: With dead ends: 1544 [2021-11-20 06:47:40,271 INFO L226 Difference]: Without dead ends: 960 [2021-11-20 06:47:40,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:47:40,278 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 1714 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 5646 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 6221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 5646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:47:40,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 3793 Invalid, 6221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [575 Valid, 5646 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-20 06:47:40,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-20 06:47:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 600. [2021-11-20 06:47:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 466 states have (on average 1.667381974248927) internal successors, (777), 484 states have internal predecessors, (777), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2021-11-20 06:47:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 990 transitions. [2021-11-20 06:47:40,429 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 990 transitions. Word has length 100 [2021-11-20 06:47:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:47:40,431 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 990 transitions. [2021-11-20 06:47:40,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:47:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 990 transitions. [2021-11-20 06:47:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 06:47:40,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:47:40,437 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:40,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:47:40,438 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:47:40,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash -343069422, now seen corresponding path program 1 times [2021-11-20 06:47:40,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:40,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061921604] [2021-11-20 06:47:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:40,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:47:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:47:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:47:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 06:47:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:47:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:47:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:47:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 06:47:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:47:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:47:40,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:40,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061921604] [2021-11-20 06:47:40,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061921604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:40,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:40,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:47:40,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554262463] [2021-11-20 06:47:40,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:40,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:47:40,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:47:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:47:40,893 INFO L87 Difference]: Start difference. First operand 600 states and 990 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:47:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:47:46,776 INFO L93 Difference]: Finished difference Result 1535 states and 2608 transitions. [2021-11-20 06:47:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:47:46,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2021-11-20 06:47:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:47:46,786 INFO L225 Difference]: With dead ends: 1535 [2021-11-20 06:47:46,786 INFO L226 Difference]: Without dead ends: 920 [2021-11-20 06:47:46,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:47:46,792 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 1086 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:47:46,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 2373 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 06:47:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-20 06:47:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 576. [2021-11-20 06:47:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.658426966292135) internal successors, (738), 461 states have internal predecessors, (738), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:47:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 947 transitions. [2021-11-20 06:47:46,895 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 947 transitions. Word has length 100 [2021-11-20 06:47:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:47:46,896 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 947 transitions. [2021-11-20 06:47:46,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:47:46,896 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 947 transitions. [2021-11-20 06:47:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-20 06:47:46,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:47:46,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:46,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:47:46,901 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:47:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2024065694, now seen corresponding path program 1 times [2021-11-20 06:47:46,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:46,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646687050] [2021-11-20 06:47:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:46,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:47:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 06:47:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:47:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:47:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:47:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:47:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 06:47:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 06:47:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:47:47,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646687050] [2021-11-20 06:47:47,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646687050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:47,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:47,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:47:47,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564384582] [2021-11-20 06:47:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:47,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:47:47,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:47:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:47:47,345 INFO L87 Difference]: Start difference. First operand 576 states and 947 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:47:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:47:53,773 INFO L93 Difference]: Finished difference Result 1498 states and 2539 transitions. [2021-11-20 06:47:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:47:53,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2021-11-20 06:47:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:47:53,783 INFO L225 Difference]: With dead ends: 1498 [2021-11-20 06:47:53,783 INFO L226 Difference]: Without dead ends: 914 [2021-11-20 06:47:53,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:47:53,790 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 1724 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 5218 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 3739 SdHoareTripleChecker+Invalid, 5797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 5218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:47:53,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 3739 Invalid, 5797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [579 Valid, 5218 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-20 06:47:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-20 06:47:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 570. [2021-11-20 06:47:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 439 states have (on average 1.6514806378132119) internal successors, (725), 455 states have internal predecessors, (725), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:47:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 934 transitions. [2021-11-20 06:47:53,894 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 934 transitions. Word has length 101 [2021-11-20 06:47:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:47:53,895 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 934 transitions. [2021-11-20 06:47:53,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:47:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 934 transitions. [2021-11-20 06:47:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 06:47:53,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:47:53,899 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:47:53,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:47:53,900 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:47:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:47:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash 647112022, now seen corresponding path program 1 times [2021-11-20 06:47:53,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:47:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099688286] [2021-11-20 06:47:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:47:53,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:47:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:47:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:47:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:47:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:47:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:47:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 06:47:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 06:47:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:47:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:47:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 06:47:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:47:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:47:54,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:47:54,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099688286] [2021-11-20 06:47:54,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099688286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:47:54,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:47:54,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:47:54,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243519357] [2021-11-20 06:47:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:47:54,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:47:54,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:47:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:47:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:47:54,330 INFO L87 Difference]: Start difference. First operand 570 states and 934 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:48:00,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:00,380 INFO L93 Difference]: Finished difference Result 1468 states and 2488 transitions. [2021-11-20 06:48:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:48:00,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2021-11-20 06:48:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:00,391 INFO L225 Difference]: With dead ends: 1468 [2021-11-20 06:48:00,392 INFO L226 Difference]: Without dead ends: 914 [2021-11-20 06:48:00,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:48:00,398 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 1636 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 3229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:00,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 2160 Invalid, 3229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-20 06:48:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-20 06:48:00,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 570. [2021-11-20 06:48:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 439 states have (on average 1.6492027334851935) internal successors, (724), 455 states have internal predecessors, (724), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 933 transitions. [2021-11-20 06:48:00,512 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 933 transitions. Word has length 102 [2021-11-20 06:48:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:00,512 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 933 transitions. [2021-11-20 06:48:00,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:48:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 933 transitions. [2021-11-20 06:48:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 06:48:00,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:00,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:00,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:48:00,518 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash -600205313, now seen corresponding path program 1 times [2021-11-20 06:48:00,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:00,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658116327] [2021-11-20 06:48:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:00,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 06:48:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-20 06:48:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 06:48:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 06:48:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:48:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 06:48:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:00,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:00,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658116327] [2021-11-20 06:48:00,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658116327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:00,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:00,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:48:00,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866707939] [2021-11-20 06:48:00,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:00,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:48:00,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:48:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:48:00,956 INFO L87 Difference]: Start difference. First operand 570 states and 933 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:07,890 INFO L93 Difference]: Finished difference Result 1486 states and 2508 transitions. [2021-11-20 06:48:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:48:07,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2021-11-20 06:48:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:07,900 INFO L225 Difference]: With dead ends: 1486 [2021-11-20 06:48:07,900 INFO L226 Difference]: Without dead ends: 908 [2021-11-20 06:48:07,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:48:07,906 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 1654 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 5302 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 5869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 5302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:07,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1765 Valid, 3731 Invalid, 5869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [567 Valid, 5302 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 06:48:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-20 06:48:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 564. [2021-11-20 06:48:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6420323325635104) internal successors, (711), 449 states have internal predecessors, (711), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 920 transitions. [2021-11-20 06:48:08,004 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 920 transitions. Word has length 103 [2021-11-20 06:48:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:08,005 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 920 transitions. [2021-11-20 06:48:08,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 920 transitions. [2021-11-20 06:48:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 06:48:08,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:08,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:08,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:48:08,010 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -839754217, now seen corresponding path program 1 times [2021-11-20 06:48:08,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:08,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815114935] [2021-11-20 06:48:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:08,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 06:48:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 06:48:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:48:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 06:48:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:48:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:48:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:08,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:08,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815114935] [2021-11-20 06:48:08,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815114935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:08,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:08,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:48:08,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459857890] [2021-11-20 06:48:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:08,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:48:08,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:48:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:48:08,399 INFO L87 Difference]: Start difference. First operand 564 states and 920 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:48:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:13,989 INFO L93 Difference]: Finished difference Result 1456 states and 2459 transitions. [2021-11-20 06:48:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:48:13,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2021-11-20 06:48:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:13,999 INFO L225 Difference]: With dead ends: 1456 [2021-11-20 06:48:13,999 INFO L226 Difference]: Without dead ends: 908 [2021-11-20 06:48:14,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:48:14,004 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 1064 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:14,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2266 Invalid, 3076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 06:48:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-20 06:48:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 564. [2021-11-20 06:48:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6397228637413395) internal successors, (710), 449 states have internal predecessors, (710), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 919 transitions. [2021-11-20 06:48:14,097 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 919 transitions. Word has length 104 [2021-11-20 06:48:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:14,098 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 919 transitions. [2021-11-20 06:48:14,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:48:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 919 transitions. [2021-11-20 06:48:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-20 06:48:14,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:14,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:14,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:48:14,103 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:14,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1866795101, now seen corresponding path program 1 times [2021-11-20 06:48:14,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:14,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928456158] [2021-11-20 06:48:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:14,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 06:48:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 06:48:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 06:48:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 06:48:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 06:48:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:48:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:14,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:14,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928456158] [2021-11-20 06:48:14,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928456158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:14,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:14,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:48:14,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781249877] [2021-11-20 06:48:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:14,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:48:14,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:48:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:48:14,533 INFO L87 Difference]: Start difference. First operand 564 states and 919 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:20,818 INFO L93 Difference]: Finished difference Result 1474 states and 2477 transitions. [2021-11-20 06:48:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:48:20,827 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2021-11-20 06:48:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:20,836 INFO L225 Difference]: With dead ends: 1474 [2021-11-20 06:48:20,836 INFO L226 Difference]: Without dead ends: 902 [2021-11-20 06:48:20,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:48:20,841 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 2162 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 5052 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 5845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 5052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:20,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2273 Valid, 3747 Invalid, 5845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [793 Valid, 5052 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-20 06:48:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-20 06:48:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 558. [2021-11-20 06:48:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6323185011709602) internal successors, (697), 443 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2021-11-20 06:48:20,956 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 105 [2021-11-20 06:48:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:20,956 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2021-11-20 06:48:20,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2021-11-20 06:48:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-20 06:48:20,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:20,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:20,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:48:20,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1252853566, now seen corresponding path program 1 times [2021-11-20 06:48:20,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:20,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513241669] [2021-11-20 06:48:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:20,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 06:48:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 06:48:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 06:48:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 06:48:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 06:48:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:48:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:21,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513241669] [2021-11-20 06:48:21,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513241669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:21,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:21,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:48:21,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948081453] [2021-11-20 06:48:21,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:21,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:48:21,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:48:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:48:21,410 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:28,364 INFO L93 Difference]: Finished difference Result 1444 states and 2430 transitions. [2021-11-20 06:48:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:48:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2021-11-20 06:48:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:28,374 INFO L225 Difference]: With dead ends: 1444 [2021-11-20 06:48:28,374 INFO L226 Difference]: Without dead ends: 902 [2021-11-20 06:48:28,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:48:28,379 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 1053 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 5155 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 5507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 5155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:28,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 3702 Invalid, 5507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [352 Valid, 5155 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 06:48:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-20 06:48:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 558. [2021-11-20 06:48:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.629976580796253) internal successors, (696), 443 states have internal predecessors, (696), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 905 transitions. [2021-11-20 06:48:28,511 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 905 transitions. Word has length 105 [2021-11-20 06:48:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:28,512 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 905 transitions. [2021-11-20 06:48:28,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 905 transitions. [2021-11-20 06:48:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 06:48:28,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:28,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:28,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:48:28,518 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash 88617629, now seen corresponding path program 1 times [2021-11-20 06:48:28,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:28,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435136325] [2021-11-20 06:48:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:28,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:48:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:48:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:48:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 06:48:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 06:48:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:48:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:28,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:28,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435136325] [2021-11-20 06:48:28,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435136325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:28,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:28,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:48:28,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592374252] [2021-11-20 06:48:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:28,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:48:28,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:48:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:48:28,980 INFO L87 Difference]: Start difference. First operand 558 states and 905 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:35,987 INFO L93 Difference]: Finished difference Result 1456 states and 2440 transitions. [2021-11-20 06:48:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:48:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2021-11-20 06:48:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:35,997 INFO L225 Difference]: With dead ends: 1456 [2021-11-20 06:48:35,997 INFO L226 Difference]: Without dead ends: 914 [2021-11-20 06:48:36,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:48:36,002 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 1022 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 5187 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 5187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:36,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3849 Invalid, 5541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [354 Valid, 5187 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 06:48:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-11-20 06:48:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 564. [2021-11-20 06:48:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6212471131639723) internal successors, (702), 449 states have internal predecessors, (702), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 911 transitions. [2021-11-20 06:48:36,155 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 911 transitions. Word has length 106 [2021-11-20 06:48:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:36,155 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 911 transitions. [2021-11-20 06:48:36,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 911 transitions. [2021-11-20 06:48:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 06:48:36,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:36,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:36,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:48:36,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:36,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash -878733025, now seen corresponding path program 1 times [2021-11-20 06:48:36,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:36,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073197853] [2021-11-20 06:48:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:36,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:48:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:48:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:48:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 06:48:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 06:48:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:48:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:36,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:36,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073197853] [2021-11-20 06:48:36,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073197853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:36,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:36,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:48:36,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515932076] [2021-11-20 06:48:36,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:36,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:48:36,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:48:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:48:36,574 INFO L87 Difference]: Start difference. First operand 564 states and 911 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:42,847 INFO L93 Difference]: Finished difference Result 1459 states and 2441 transitions. [2021-11-20 06:48:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:48:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2021-11-20 06:48:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:42,855 INFO L225 Difference]: With dead ends: 1459 [2021-11-20 06:48:42,856 INFO L226 Difference]: Without dead ends: 902 [2021-11-20 06:48:42,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:48:42,860 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 2114 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 4942 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 5736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 4942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:42,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 3593 Invalid, 5736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [794 Valid, 4942 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 06:48:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-20 06:48:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 558. [2021-11-20 06:48:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6276346604215457) internal successors, (695), 443 states have internal predecessors, (695), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 06:48:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2021-11-20 06:48:42,980 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 106 [2021-11-20 06:48:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:42,980 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2021-11-20 06:48:42,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:48:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2021-11-20 06:48:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-20 06:48:42,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:42,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:42,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:48:42,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash 557726952, now seen corresponding path program 1 times [2021-11-20 06:48:42,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:42,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503785582] [2021-11-20 06:48:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:42,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:48:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:48:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 06:48:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:48:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:48:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 06:48:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:48:43,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503785582] [2021-11-20 06:48:43,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503785582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:43,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:43,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:48:43,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645152047] [2021-11-20 06:48:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:43,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:48:43,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:48:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:48:43,369 INFO L87 Difference]: Start difference. First operand 558 states and 904 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-20 06:48:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:54,746 INFO L93 Difference]: Finished difference Result 2205 states and 3743 transitions. [2021-11-20 06:48:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:48:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2021-11-20 06:48:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:54,764 INFO L225 Difference]: With dead ends: 2205 [2021-11-20 06:48:54,765 INFO L226 Difference]: Without dead ends: 1665 [2021-11-20 06:48:54,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:48:54,771 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 2607 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 6054 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 7258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 6054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:54,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 3395 Invalid, 7258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1204 Valid, 6054 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-20 06:48:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-11-20 06:48:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1047. [2021-11-20 06:48:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 804 states have (on average 1.592039800995025) internal successors, (1280), 834 states have internal predecessors, (1280), 196 states have call successors, (196), 49 states have call predecessors, (196), 46 states have return successors, (197), 188 states have call predecessors, (197), 192 states have call successors, (197) [2021-11-20 06:48:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1673 transitions. [2021-11-20 06:48:55,015 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1673 transitions. Word has length 107 [2021-11-20 06:48:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:55,015 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 1673 transitions. [2021-11-20 06:48:55,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-20 06:48:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1673 transitions. [2021-11-20 06:48:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:48:55,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:55,020 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:55,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:48:55,020 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -737997560, now seen corresponding path program 1 times [2021-11-20 06:48:55,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:55,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551411321] [2021-11-20 06:48:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:55,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:48:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:48:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 06:48:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:48:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:48:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 06:48:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:48:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:48:55,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551411321] [2021-11-20 06:48:55,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551411321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:48:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246246063] [2021-11-20 06:48:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:55,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:48:55,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:48:55,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:48:55,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:48:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:55,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:48:55,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:48:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:56,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:48:56,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246246063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:56,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:48:56,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-11-20 06:48:56,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958448966] [2021-11-20 06:48:56,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:56,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:56,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:48:56,131 INFO L87 Difference]: Start difference. First operand 1047 states and 1673 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 06:48:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:56,680 INFO L93 Difference]: Finished difference Result 3013 states and 4881 transitions. [2021-11-20 06:48:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-11-20 06:48:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:56,695 INFO L225 Difference]: With dead ends: 3013 [2021-11-20 06:48:56,695 INFO L226 Difference]: Without dead ends: 1984 [2021-11-20 06:48:56,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:48:56,705 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 831 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:56,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1845 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-11-20 06:48:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1923. [2021-11-20 06:48:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1486 states have (on average 1.6096904441453566) internal successors, (2392), 1546 states have internal predecessors, (2392), 349 states have call successors, (349), 88 states have call predecessors, (349), 87 states have return successors, (364), 338 states have call predecessors, (364), 345 states have call successors, (364) [2021-11-20 06:48:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 3105 transitions. [2021-11-20 06:48:57,104 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 3105 transitions. Word has length 112 [2021-11-20 06:48:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:57,105 INFO L470 AbstractCegarLoop]: Abstraction has 1923 states and 3105 transitions. [2021-11-20 06:48:57,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 06:48:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 3105 transitions. [2021-11-20 06:48:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 06:48:57,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:57,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:57,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:48:57,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:48:57,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1887158406, now seen corresponding path program 1 times [2021-11-20 06:48:57,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:57,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716189427] [2021-11-20 06:48:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:57,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:48:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:48:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:48:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 06:48:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:48:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:48:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:48:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 06:48:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 06:48:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:48:57,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:57,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716189427] [2021-11-20 06:48:57,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716189427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:48:57,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082416103] [2021-11-20 06:48:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:57,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:48:57,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:48:57,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:48:57,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:48:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:58,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:48:58,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:48:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:58,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:48:58,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082416103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:58,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:48:58,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-11-20 06:48:58,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777345763] [2021-11-20 06:48:58,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:58,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:58,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:48:58,350 INFO L87 Difference]: Start difference. First operand 1923 states and 3105 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 06:48:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:58,935 INFO L93 Difference]: Finished difference Result 4308 states and 6995 transitions. [2021-11-20 06:48:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-11-20 06:48:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:58,955 INFO L225 Difference]: With dead ends: 4308 [2021-11-20 06:48:58,955 INFO L226 Difference]: Without dead ends: 2403 [2021-11-20 06:48:58,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:48:58,965 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 829 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:58,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 1784 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-11-20 06:48:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2356. [2021-11-20 06:48:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1824 states have (on average 1.6211622807017543) internal successors, (2957), 1899 states have internal predecessors, (2957), 425 states have call successors, (425), 106 states have call predecessors, (425), 106 states have return successors, (444), 413 states have call predecessors, (444), 421 states have call successors, (444) [2021-11-20 06:48:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3826 transitions. [2021-11-20 06:48:59,392 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3826 transitions. Word has length 113 [2021-11-20 06:48:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:59,392 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 3826 transitions. [2021-11-20 06:48:59,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 06:48:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3826 transitions. [2021-11-20 06:48:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 06:48:59,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:59,399 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:59,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:48:59,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f231ef-f0e8-477f-b300-d4213e3fc43b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 06:48:59,613 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:48:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -918322287, now seen corresponding path program 1 times [2021-11-20 06:48:59,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:59,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765408302] [2021-11-20 06:48:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:59,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:48:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:48:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:49:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:49:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:49:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:49:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:49:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 06:49:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:49:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:49:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 06:49:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 06:49:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:49:00,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:00,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765408302] [2021-11-20 06:49:00,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765408302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:00,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:00,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:49:00,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708886277] [2021-11-20 06:49:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:00,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:49:00,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:49:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:49:00,083 INFO L87 Difference]: Start difference. First operand 2356 states and 3826 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 06:49:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:19,210 INFO L93 Difference]: Finished difference Result 11810 states and 21519 transitions. [2021-11-20 06:49:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:49:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2021-11-20 06:49:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:19,323 INFO L225 Difference]: With dead ends: 11810 [2021-11-20 06:49:19,323 INFO L226 Difference]: Without dead ends: 9472 [2021-11-20 06:49:19,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:49:19,351 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 5104 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 8206 mSolverCounterSat, 3009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 11215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3009 IncrementalHoareTripleChecker+Valid, 8206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:19,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5222 Valid, 4227 Invalid, 11215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3009 Valid, 8206 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2021-11-20 06:49:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2021-11-20 06:49:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 5731. [2021-11-20 06:49:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5731 states, 4195 states have (on average 1.5909415971394518) internal successors, (6674), 4500 states have internal predecessors, (6674), 1266 states have call successors, (1266), 206 states have call predecessors, (1266), 269 states have return successors, (2055), 1260 states have call predecessors, (2055), 1260 states have call successors, (2055) [2021-11-20 06:49:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5731 states to 5731 states and 9995 transitions. [2021-11-20 06:49:21,060 INFO L78 Accepts]: Start accepts. Automaton has 5731 states and 9995 transitions. Word has length 116 [2021-11-20 06:49:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:21,060 INFO L470 AbstractCegarLoop]: Abstraction has 5731 states and 9995 transitions. [2021-11-20 06:49:21,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 06:49:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5731 states and 9995 transitions. [2021-11-20 06:49:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 06:49:21,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:21,067 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:49:21,068 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:49:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2005567924, now seen corresponding path program 1 times [2021-11-20 06:49:21,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802869937] [2021-11-20 06:49:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:21,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:49:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:49:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:49:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:49:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:49:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:49:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:49:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:49:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 06:49:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:49:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:49:21,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:21,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802869937] [2021-11-20 06:49:21,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802869937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:21,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:21,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:49:21,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629863511] [2021-11-20 06:49:21,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:21,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:49:21,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:49:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:49:21,421 INFO L87 Difference]: Start difference. First operand 5731 states and 9995 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 06:49:28,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:28,285 INFO L93 Difference]: Finished difference Result 12903 states and 22975 transitions. [2021-11-20 06:49:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:49:28,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2021-11-20 06:49:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:28,342 INFO L225 Difference]: With dead ends: 12903 [2021-11-20 06:49:28,342 INFO L226 Difference]: Without dead ends: 7190 [2021-11-20 06:49:28,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:49:28,381 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 1514 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:28,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 2240 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:49:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7190 states. [2021-11-20 06:49:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7190 to 5739. [2021-11-20 06:49:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5739 states, 4201 states have (on average 1.5896215186860272) internal successors, (6678), 4506 states have internal predecessors, (6678), 1266 states have call successors, (1266), 210 states have call predecessors, (1266), 271 states have return successors, (2045), 1258 states have call predecessors, (2045), 1260 states have call successors, (2045) [2021-11-20 06:49:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 9989 transitions. [2021-11-20 06:49:30,018 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 9989 transitions. Word has length 117 [2021-11-20 06:49:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:30,018 INFO L470 AbstractCegarLoop]: Abstraction has 5739 states and 9989 transitions. [2021-11-20 06:49:30,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 06:49:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 9989 transitions. [2021-11-20 06:49:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-20 06:49:30,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:30,025 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:49:30,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:49:30,025 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:49:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1553151104, now seen corresponding path program 1 times [2021-11-20 06:49:30,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:30,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927364219] [2021-11-20 06:49:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:30,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:49:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:49:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:49:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:49:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:49:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 06:49:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:49:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 06:49:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:49:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 06:49:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:49:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:49:30,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:30,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927364219] [2021-11-20 06:49:30,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927364219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:30,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:30,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:49:30,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831869785] [2021-11-20 06:49:30,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:30,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:49:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:49:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:49:30,403 INFO L87 Difference]: Start difference. First operand 5739 states and 9989 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 06:49:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:52,595 INFO L93 Difference]: Finished difference Result 24630 states and 47134 transitions. [2021-11-20 06:49:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:49:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2021-11-20 06:49:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:52,768 INFO L225 Difference]: With dead ends: 24630 [2021-11-20 06:49:52,768 INFO L226 Difference]: Without dead ends: 18909 [2021-11-20 06:49:52,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:49:52,834 INFO L933 BasicCegarLoop]: 1258 mSDtfsCounter, 5105 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 8207 mSolverCounterSat, 3031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 11238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3031 IncrementalHoareTripleChecker+Valid, 8207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:52,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5223 Valid, 4367 Invalid, 11238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3031 Valid, 8207 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2021-11-20 06:49:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2021-11-20 06:49:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 11420. [2021-11-20 06:49:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11420 states, 8361 states have (on average 1.5848582705418013) internal successors, (13251), 8966 states have internal predecessors, (13251), 2511 states have call successors, (2511), 414 states have call predecessors, (2511), 547 states have return successors, (4542), 2505 states have call predecessors, (4542), 2501 states have call successors, (4542) [2021-11-20 06:49:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 20304 transitions. [2021-11-20 06:49:56,095 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 20304 transitions. Word has length 125 [2021-11-20 06:49:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:56,096 INFO L470 AbstractCegarLoop]: Abstraction has 11420 states and 20304 transitions. [2021-11-20 06:49:56,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 06:49:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 20304 transitions. [2021-11-20 06:49:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 06:49:56,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:56,104 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:49:56,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:49:56,104 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:49:56,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:56,105 INFO L85 PathProgramCache]: Analyzing trace with hash -576711990, now seen corresponding path program 1 times [2021-11-20 06:49:56,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:56,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796345050] [2021-11-20 06:49:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:56,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:49:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:49:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:49:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:49:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:49:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:49:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:49:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:49:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:49:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:49:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 06:49:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:49:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:49:56,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796345050] [2021-11-20 06:49:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796345050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:56,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:56,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:49:56,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318680247] [2021-11-20 06:49:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:56,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:49:56,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:49:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:49:56,409 INFO L87 Difference]: Start difference. First operand 11420 states and 20304 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 06:50:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:50:05,389 INFO L93 Difference]: Finished difference Result 25581 states and 47187 transitions. [2021-11-20 06:50:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:50:05,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2021-11-20 06:50:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:50:05,508 INFO L225 Difference]: With dead ends: 25581 [2021-11-20 06:50:05,508 INFO L226 Difference]: Without dead ends: 14179 [2021-11-20 06:50:05,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:50:05,627 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1037 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:50:05,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 2241 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:50:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14179 states. [2021-11-20 06:50:08,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14179 to 11460. [2021-11-20 06:50:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11460 states, 8397 states have (on average 1.5828272001905443) internal successors, (13291), 8994 states have internal predecessors, (13291), 2511 states have call successors, (2511), 430 states have call predecessors, (2511), 551 states have return successors, (4528), 2501 states have call predecessors, (4528), 2501 states have call successors, (4528) [2021-11-20 06:50:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11460 states to 11460 states and 20330 transitions. [2021-11-20 06:50:08,862 INFO L78 Accepts]: Start accepts. Automaton has 11460 states and 20330 transitions. Word has length 128 [2021-11-20 06:50:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:50:08,863 INFO L470 AbstractCegarLoop]: Abstraction has 11460 states and 20330 transitions. [2021-11-20 06:50:08,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 06:50:08,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11460 states and 20330 transitions. [2021-11-20 06:50:08,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 06:50:08,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:50:08,872 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 06:50:08,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:50:08,872 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:50:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:50:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash 202275201, now seen corresponding path program 1 times [2021-11-20 06:50:08,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:50:08,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042428878] [2021-11-20 06:50:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:50:08,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:50:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:50:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:50:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:50:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:50:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:50:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:50:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:50:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:50:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:50:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:50:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:50:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:50:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:50:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 06:50:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:50:09,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:50:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042428878] [2021-11-20 06:50:09,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042428878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:50:09,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:50:09,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:50:09,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7215438] [2021-11-20 06:50:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:50:09,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:50:09,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:50:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:50:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:50:09,279 INFO L87 Difference]: Start difference. First operand 11460 states and 20330 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 06:50:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:50:37,570 INFO L93 Difference]: Finished difference Result 49222 states and 100242 transitions. [2021-11-20 06:50:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:50:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2021-11-20 06:50:37,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:50:38,284 INFO L225 Difference]: With dead ends: 49222 [2021-11-20 06:50:38,284 INFO L226 Difference]: Without dead ends: 37780 [2021-11-20 06:50:38,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:50:38,406 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 4015 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 8425 mSolverCounterSat, 2531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 10956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2531 IncrementalHoareTripleChecker+Valid, 8425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:50:38,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4134 Valid, 4522 Invalid, 10956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2531 Valid, 8425 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2021-11-20 06:50:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37780 states. [2021-11-20 06:50:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37780 to 22903. [2021-11-20 06:50:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22903 states, 16785 states have (on average 1.5792672028596961) internal successors, (26508), 17974 states have internal predecessors, (26508), 5006 states have call successors, (5006), 854 states have call predecessors, (5006), 1111 states have return successors, (10311), 5000 states have call predecessors, (10311), 4988 states have call successors, (10311) [2021-11-20 06:50:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22903 states to 22903 states and 41825 transitions. [2021-11-20 06:50:45,320 INFO L78 Accepts]: Start accepts. Automaton has 22903 states and 41825 transitions. Word has length 137 [2021-11-20 06:50:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:50:45,321 INFO L470 AbstractCegarLoop]: Abstraction has 22903 states and 41825 transitions. [2021-11-20 06:50:45,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 06:50:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 22903 states and 41825 transitions. [2021-11-20 06:50:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-20 06:50:45,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:50:45,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 06:50:45,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:50:45,334 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:50:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:50:45,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1229514506, now seen corresponding path program 1 times [2021-11-20 06:50:45,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:50:45,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645026272] [2021-11-20 06:50:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:50:45,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:50:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:50:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:50:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:50:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:50:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:50:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:50:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:50:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:50:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:50:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:50:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:50:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:50:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:50:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:50:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 06:50:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:50:45,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:50:45,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645026272] [2021-11-20 06:50:45,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645026272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:50:45,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:50:45,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:50:45,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26045881] [2021-11-20 06:50:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:50:45,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:50:45,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:50:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:50:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:50:45,726 INFO L87 Difference]: Start difference. First operand 22903 states and 41825 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:50:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:50:59,354 INFO L93 Difference]: Finished difference Result 51187 states and 99807 transitions. [2021-11-20 06:50:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:50:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2021-11-20 06:50:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:50:59,625 INFO L225 Difference]: With dead ends: 51187 [2021-11-20 06:50:59,626 INFO L226 Difference]: Without dead ends: 28302 [2021-11-20 06:50:59,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:50:59,964 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 2065 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:50:59,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 2175 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:50:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28302 states. [2021-11-20 06:51:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28302 to 22983. [2021-11-20 06:51:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22983 states, 16857 states have (on average 1.5772676039627453) internal successors, (26588), 18046 states have internal predecessors, (26588), 5006 states have call successors, (5006), 870 states have call predecessors, (5006), 1119 states have return successors, (10295), 4992 states have call predecessors, (10295), 4988 states have call successors, (10295) [2021-11-20 06:51:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22983 states to 22983 states and 41889 transitions. [2021-11-20 06:51:06,332 INFO L78 Accepts]: Start accepts. Automaton has 22983 states and 41889 transitions. Word has length 139 [2021-11-20 06:51:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:51:06,333 INFO L470 AbstractCegarLoop]: Abstraction has 22983 states and 41889 transitions. [2021-11-20 06:51:06,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:51:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 22983 states and 41889 transitions. [2021-11-20 06:51:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-20 06:51:06,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:51:06,345 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-11-20 06:51:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:51:06,346 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:51:06,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:51:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash -890083610, now seen corresponding path program 1 times [2021-11-20 06:51:06,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:51:06,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665022088] [2021-11-20 06:51:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:51:06,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:51:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:51:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 06:51:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:51:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:51:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:51:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:51:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:51:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:51:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:51:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 06:51:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:51:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 06:51:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:51:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:51:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 06:51:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 06:51:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:51:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 06:51:06,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:51:06,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665022088] [2021-11-20 06:51:06,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665022088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:51:06,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:51:06,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:51:06,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611758025] [2021-11-20 06:51:06,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:51:06,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:51:06,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:51:06,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:51:06,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:51:06,718 INFO L87 Difference]: Start difference. First operand 22983 states and 41889 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17)