./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa --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 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:40:25,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:40:25,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:40:25,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:40:25,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:40:25,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:40:25,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:40:25,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:40:25,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:40:25,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:40:25,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:40:25,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:40:25,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:40:25,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:40:25,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:40:25,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:40:25,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:40:25,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:40:25,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:40:25,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:40:25,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:40:25,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:40:25,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:40:25,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:40:25,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:40:25,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:40:25,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:40:25,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:40:25,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:40:25,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:40:25,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:40:25,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:40:25,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:40:25,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:40:25,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:40:25,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:40:25,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:40:25,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:40:25,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:40:25,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:40:25,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:40:25,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:40:25,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:40:25,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:40:25,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:40:25,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:40:25,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:40:25,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:40:25,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:40:25,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:40:25,646 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:40:25,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:40:25,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:40:25,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:40:25,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:40:25,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:40:25,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:40:25,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:40:25,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:40:25,649 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:40:25,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:40:25,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:40:25,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:40:25,649 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_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18d9c4eb49bcfbad00b16e4c52915ece2e20abb9b599480aaed1e3c1557875b0 [2021-12-06 19:40:25,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:40:25,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:40:25,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:40:25,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:40:25,853 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:40:25,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-12-06 19:40:25,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/data/07da9314b/ee6d5d48363b48b2a1cf7b955a3f19eb/FLAG396159831 [2021-12-06 19:40:26,340 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:40:26,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c [2021-12-06 19:40:26,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/data/07da9314b/ee6d5d48363b48b2a1cf7b955a3f19eb/FLAG396159831 [2021-12-06 19:40:26,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/data/07da9314b/ee6d5d48363b48b2a1cf7b955a3f19eb [2021-12-06 19:40:26,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:40:26,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:40:26,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:40:26,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:40:26,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:40:26,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:40:26" (1/1) ... [2021-12-06 19:40:26,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739ab4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:26, skipping insertion in model container [2021-12-06 19:40:26,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:40:26" (1/1) ... [2021-12-06 19:40:26,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:40:26,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:40:26,853 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_1d18114a-4f6d-404c-8173-1609b6500bc4/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-12-06 19:40:27,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:40:27,147 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:40:27,165 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_1d18114a-4f6d-404c-8173-1609b6500bc4/sv-benchmarks/c/product-lines/email_spec3_productSimulator.cil.c[9250,9263] [2021-12-06 19:40:27,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:40:27,256 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:40:27,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27 WrapperNode [2021-12-06 19:40:27,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:40:27,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:40:27,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:40:27,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:40:27,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,346 INFO L137 Inliner]: procedures = 152, calls = 292, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1344 [2021-12-06 19:40:27,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:40:27,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:40:27,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:40:27,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:40:27,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:40:27,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:40:27,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:40:27,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:40:27,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (1/1) ... [2021-12-06 19:40:27,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:40:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:27,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:40:27,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 19:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 19:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-12-06 19:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-12-06 19:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-12-06 19:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-12-06 19:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-06 19:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-06 19:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 19:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 19:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-06 19:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-06 19:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 19:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 19:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-12-06 19:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-12-06 19:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 19:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 19:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-12-06 19:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 19:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 19:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 19:40:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 19:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 19:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-12-06 19:40:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-12-06 19:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 19:40:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 19:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 19:40:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 19:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 19:40:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 19:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-12-06 19:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-12-06 19:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 19:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 19:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 19:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 19:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-12-06 19:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-12-06 19:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-12-06 19:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-12-06 19:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-12-06 19:40:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-12-06 19:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-06 19:40:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-06 19:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 19:40:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 19:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 19:40:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 19:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 19:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 19:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 19:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 19:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 19:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 19:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 19:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 19:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 19:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 19:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-12-06 19:40:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-12-06 19:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-12-06 19:40:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-12-06 19:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 19:40:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 19:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 19:40:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 19:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 19:40:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 19:40:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-12-06 19:40:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-12-06 19:40:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-12-06 19:40:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-12-06 19:40:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-06 19:40:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-06 19:40:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:40:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:40:27,667 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:40:27,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:40:28,218 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:40:28,232 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:40:28,232 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:40:28,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:40:28 BoogieIcfgContainer [2021-12-06 19:40:28,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:40:28,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:40:28,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:40:28,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:40:28,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:40:26" (1/3) ... [2021-12-06 19:40:28,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145d3f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:40:28, skipping insertion in model container [2021-12-06 19:40:28,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:27" (2/3) ... [2021-12-06 19:40:28,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145d3f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:40:28, skipping insertion in model container [2021-12-06 19:40:28,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:40:28" (3/3) ... [2021-12-06 19:40:28,243 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_productSimulator.cil.c [2021-12-06 19:40:28,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:40:28,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:40:28,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:40:28,309 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 [2021-12-06 19:40:28,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:40:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 614 states, 453 states have (on average 1.5121412803532008) internal successors, (685), 475 states have internal predecessors, (685), 115 states have call successors, (115), 44 states have call predecessors, (115), 44 states have return successors, (115), 113 states have call predecessors, (115), 115 states have call successors, (115) [2021-12-06 19:40:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 19:40:28,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:28,365 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 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] [2021-12-06 19:40:28,366 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1093087284, now seen corresponding path program 1 times [2021-12-06 19:40:28,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:28,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924211267] [2021-12-06 19:40:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:28,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:40:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:40:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:40:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 19:40:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:40:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 19:40:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 19:40:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:40:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 19:40:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:40:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 19:40:28,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:28,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924211267] [2021-12-06 19:40:28,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924211267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:28,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:28,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:40:28,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631170522] [2021-12-06 19:40:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:28,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:40:28,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:40:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:40:28,865 INFO L87 Difference]: Start difference. First operand has 614 states, 453 states have (on average 1.5121412803532008) internal successors, (685), 475 states have internal predecessors, (685), 115 states have call successors, (115), 44 states have call predecessors, (115), 44 states have return successors, (115), 113 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:40:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:29,762 INFO L93 Difference]: Finished difference Result 1093 states and 1654 transitions. [2021-12-06 19:40:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:40:29,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2021-12-06 19:40:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:29,781 INFO L225 Difference]: With dead ends: 1093 [2021-12-06 19:40:29,781 INFO L226 Difference]: Without dead ends: 741 [2021-12-06 19:40:29,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:40:29,790 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 1374 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:29,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1651 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:40:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-12-06 19:40:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 606. [2021-12-06 19:40:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 447 states have (on average 1.5078299776286352) internal successors, (674), 467 states have internal predecessors, (674), 115 states have call successors, (115), 44 states have call predecessors, (115), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-06 19:40:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 901 transitions. [2021-12-06 19:40:29,885 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 901 transitions. Word has length 152 [2021-12-06 19:40:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:29,886 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 901 transitions. [2021-12-06 19:40:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:40:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 901 transitions. [2021-12-06 19:40:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 19:40:29,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:29,891 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 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] [2021-12-06 19:40:29,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:40:29,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1753524556, now seen corresponding path program 1 times [2021-12-06 19:40:29,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:29,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203349924] [2021-12-06 19:40:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:29,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:40:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 19:40:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:40:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 19:40:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 19:40:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 19:40:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:40:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:40:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:40:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:40:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 19:40:30,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:30,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203349924] [2021-12-06 19:40:30,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203349924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:30,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:30,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:40:30,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573382683] [2021-12-06 19:40:30,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:30,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:40:30,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:30,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:40:30,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:40:30,082 INFO L87 Difference]: Start difference. First operand 606 states and 901 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:40:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:31,440 INFO L93 Difference]: Finished difference Result 1311 states and 1977 transitions. [2021-12-06 19:40:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:40:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2021-12-06 19:40:31,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:31,447 INFO L225 Difference]: With dead ends: 1311 [2021-12-06 19:40:31,447 INFO L226 Difference]: Without dead ends: 741 [2021-12-06 19:40:31,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:40:31,452 INFO L933 BasicCegarLoop]: 909 mSDtfsCounter, 1380 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:31,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 2838 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:40:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-12-06 19:40:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 606. [2021-12-06 19:40:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 447 states have (on average 1.4921700223713648) internal successors, (667), 467 states have internal predecessors, (667), 115 states have call successors, (115), 44 states have call predecessors, (115), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-06 19:40:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 894 transitions. [2021-12-06 19:40:31,496 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 894 transitions. Word has length 153 [2021-12-06 19:40:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:31,496 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 894 transitions. [2021-12-06 19:40:31,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:40:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 894 transitions. [2021-12-06 19:40:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 19:40:31,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:31,499 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 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] [2021-12-06 19:40:31,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:40:31,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash 669699045, now seen corresponding path program 1 times [2021-12-06 19:40:31,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191267684] [2021-12-06 19:40:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:31,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 19:40:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:40:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 19:40:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 19:40:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 19:40:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 19:40:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:40:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 19:40:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:40:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:40:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 19:40:31,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:31,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191267684] [2021-12-06 19:40:31,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191267684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:31,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:31,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:40:31,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13597221] [2021-12-06 19:40:31,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:31,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:40:31,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:40:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:40:31,630 INFO L87 Difference]: Start difference. First operand 606 states and 894 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 19:40:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:32,429 INFO L93 Difference]: Finished difference Result 1317 states and 1998 transitions. [2021-12-06 19:40:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:40:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 158 [2021-12-06 19:40:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:32,435 INFO L225 Difference]: With dead ends: 1317 [2021-12-06 19:40:32,435 INFO L226 Difference]: Without dead ends: 742 [2021-12-06 19:40:32,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:40:32,438 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 2061 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:32,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2088 Valid, 1588 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:40:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-12-06 19:40:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 607. [2021-12-06 19:40:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 449 states have (on average 1.4810690423162582) internal successors, (665), 467 states have internal predecessors, (665), 113 states have call successors, (113), 45 states have call predecessors, (113), 44 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-12-06 19:40:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 888 transitions. [2021-12-06 19:40:32,469 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 888 transitions. Word has length 158 [2021-12-06 19:40:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:32,469 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 888 transitions. [2021-12-06 19:40:32,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 5 states have call predecessors, (28), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 19:40:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 888 transitions. [2021-12-06 19:40:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-06 19:40:32,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:32,472 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:32,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:40:32,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -749851592, now seen corresponding path program 1 times [2021-12-06 19:40:32,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:32,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034074315] [2021-12-06 19:40:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:32,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:40:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 19:40:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 19:40:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:40:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:40:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 19:40:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:40:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 19:40:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:40:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 19:40:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:40:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 19:40:32,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:32,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034074315] [2021-12-06 19:40:32,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034074315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:32,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:32,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:40:32,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395633103] [2021-12-06 19:40:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:32,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:40:32,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:40:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:40:32,633 INFO L87 Difference]: Start difference. First operand 607 states and 888 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 19:40:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:33,385 INFO L93 Difference]: Finished difference Result 1310 states and 1972 transitions. [2021-12-06 19:40:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:40:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 168 [2021-12-06 19:40:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:33,390 INFO L225 Difference]: With dead ends: 1310 [2021-12-06 19:40:33,390 INFO L226 Difference]: Without dead ends: 739 [2021-12-06 19:40:33,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:40:33,392 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 2049 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 848 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:33,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2076 Valid, 1589 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [848 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:40:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-12-06 19:40:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 605. [2021-12-06 19:40:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 449 states have (on average 1.4743875278396437) internal successors, (662), 465 states have internal predecessors, (662), 111 states have call successors, (111), 45 states have call predecessors, (111), 44 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-06 19:40:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 881 transitions. [2021-12-06 19:40:33,422 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 881 transitions. Word has length 168 [2021-12-06 19:40:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:33,422 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 881 transitions. [2021-12-06 19:40:33,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 19:40:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 881 transitions. [2021-12-06 19:40:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 19:40:33,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:33,425 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:33,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:40:33,425 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash -41686357, now seen corresponding path program 1 times [2021-12-06 19:40:33,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:33,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453328083] [2021-12-06 19:40:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:33,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 19:40:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 19:40:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 19:40:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:40:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 19:40:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:40:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 19:40:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:40:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 19:40:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:40:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 19:40:33,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:33,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453328083] [2021-12-06 19:40:33,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453328083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:33,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:33,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:40:33,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856274704] [2021-12-06 19:40:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:33,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:40:33,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:40:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:40:33,534 INFO L87 Difference]: Start difference. First operand 605 states and 881 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 19:40:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:34,294 INFO L93 Difference]: Finished difference Result 1301 states and 1925 transitions. [2021-12-06 19:40:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:40:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 169 [2021-12-06 19:40:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:34,300 INFO L225 Difference]: With dead ends: 1301 [2021-12-06 19:40:34,300 INFO L226 Difference]: Without dead ends: 742 [2021-12-06 19:40:34,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:40:34,303 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 2048 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:34,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 1523 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:40:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-12-06 19:40:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 602. [2021-12-06 19:40:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 449 states have (on average 1.4498886414253898) internal successors, (651), 460 states have internal predecessors, (651), 108 states have call successors, (108), 45 states have call predecessors, (108), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 19:40:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 864 transitions. [2021-12-06 19:40:34,350 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 864 transitions. Word has length 169 [2021-12-06 19:40:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:34,351 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 864 transitions. [2021-12-06 19:40:34,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 19:40:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 864 transitions. [2021-12-06 19:40:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 19:40:34,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:34,356 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:34,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:40:34,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1079378543, now seen corresponding path program 1 times [2021-12-06 19:40:34,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:34,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093052510] [2021-12-06 19:40:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:34,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:40:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:40:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:40:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 19:40:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:40:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:40:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:40:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:40:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 19:40:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 19:40:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 19:40:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:40:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 19:40:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 19:40:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 19:40:34,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093052510] [2021-12-06 19:40:34,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093052510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:34,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126914027] [2021-12-06 19:40:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:34,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:34,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:34,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:34,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:40:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:40:34,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-06 19:40:34,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:40:34,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126914027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:34,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:40:34,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 19:40:34,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997155906] [2021-12-06 19:40:34,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:40:34,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:40:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:34,908 INFO L87 Difference]: Start difference. First operand 602 states and 864 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 19:40:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:34,937 INFO L93 Difference]: Finished difference Result 939 states and 1329 transitions. [2021-12-06 19:40:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:40:34,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2021-12-06 19:40:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:34,941 INFO L225 Difference]: With dead ends: 939 [2021-12-06 19:40:34,941 INFO L226 Difference]: Without dead ends: 605 [2021-12-06 19:40:34,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:34,943 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 1 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:34,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1718 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:40:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-12-06 19:40:34,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 604. [2021-12-06 19:40:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 451 states have (on average 1.4478935698447895) internal successors, (653), 462 states have internal predecessors, (653), 108 states have call successors, (108), 45 states have call predecessors, (108), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 19:40:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 866 transitions. [2021-12-06 19:40:34,967 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 866 transitions. Word has length 208 [2021-12-06 19:40:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:34,967 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 866 transitions. [2021-12-06 19:40:34,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 19:40:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 866 transitions. [2021-12-06 19:40:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 19:40:34,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:34,970 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:34,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:40:35,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:35,172 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1164905097, now seen corresponding path program 1 times [2021-12-06 19:40:35,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:35,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653772988] [2021-12-06 19:40:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:35,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:40:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:40:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:40:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 19:40:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:40:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:40:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 19:40:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 19:40:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 19:40:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 19:40:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 19:40:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 19:40:35,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:35,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653772988] [2021-12-06 19:40:35,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653772988] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:35,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244082172] [2021-12-06 19:40:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:35,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:35,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:35,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:35,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:40:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:35,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:40:35,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:40:35,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:40:35,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244082172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:35,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:40:35,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 19:40:35,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911032060] [2021-12-06 19:40:35,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:35,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:40:35,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:40:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:35,722 INFO L87 Difference]: Start difference. First operand 604 states and 866 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:35,751 INFO L93 Difference]: Finished difference Result 1228 states and 1793 transitions. [2021-12-06 19:40:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:40:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2021-12-06 19:40:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:35,755 INFO L225 Difference]: With dead ends: 1228 [2021-12-06 19:40:35,755 INFO L226 Difference]: Without dead ends: 702 [2021-12-06 19:40:35,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:35,757 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 165 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:35,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1698 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:40:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-12-06 19:40:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 694. [2021-12-06 19:40:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 527 states have (on average 1.462998102466793) internal successors, (771), 538 states have internal predecessors, (771), 122 states have call successors, (122), 45 states have call predecessors, (122), 44 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2021-12-06 19:40:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1012 transitions. [2021-12-06 19:40:35,786 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1012 transitions. Word has length 195 [2021-12-06 19:40:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:35,787 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 1012 transitions. [2021-12-06 19:40:35,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1012 transitions. [2021-12-06 19:40:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-06 19:40:35,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:35,790 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:35,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:40:35,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:35,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash -606111174, now seen corresponding path program 1 times [2021-12-06 19:40:35,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:35,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905945187] [2021-12-06 19:40:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:35,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:40:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:40:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:40:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:40:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:40:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:40:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:40:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:40:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 19:40:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 19:40:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 19:40:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 19:40:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 19:40:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 19:40:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-06 19:40:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-06 19:40:36,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:36,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905945187] [2021-12-06 19:40:36,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905945187] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:36,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574829670] [2021-12-06 19:40:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:36,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:36,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:36,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:36,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:40:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:40:36,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 19:40:36,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:40:36,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574829670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:36,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:40:36,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 19:40:36,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739574125] [2021-12-06 19:40:36,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:36,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:40:36,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:40:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:36,597 INFO L87 Difference]: Start difference. First operand 694 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-06 19:40:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:36,653 INFO L93 Difference]: Finished difference Result 2007 states and 2977 transitions. [2021-12-06 19:40:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:40:36,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 224 [2021-12-06 19:40:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:36,661 INFO L225 Difference]: With dead ends: 2007 [2021-12-06 19:40:36,661 INFO L226 Difference]: Without dead ends: 1342 [2021-12-06 19:40:36,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:36,664 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 726 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:36,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 1819 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:40:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-12-06 19:40:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1338. [2021-12-06 19:40:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1027 states have (on average 1.4673807205452776) internal successors, (1507), 1043 states have internal predecessors, (1507), 223 states have call successors, (223), 88 states have call predecessors, (223), 87 states have return successors, (235), 219 states have call predecessors, (235), 219 states have call successors, (235) [2021-12-06 19:40:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1965 transitions. [2021-12-06 19:40:36,725 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1965 transitions. Word has length 224 [2021-12-06 19:40:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:36,725 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1965 transitions. [2021-12-06 19:40:36,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-06 19:40:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1965 transitions. [2021-12-06 19:40:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-06 19:40:36,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:36,729 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:36,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:40:36,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 19:40:36,930 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:36,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1967193169, now seen corresponding path program 1 times [2021-12-06 19:40:36,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:36,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312467467] [2021-12-06 19:40:36,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:36,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:40:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:40:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:40:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:40:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:40:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:40:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 19:40:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 19:40:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 19:40:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 19:40:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 19:40:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 19:40:37,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:37,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312467467] [2021-12-06 19:40:37,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312467467] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:37,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573577347] [2021-12-06 19:40:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:37,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:37,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:37,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:37,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:40:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:40:37,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-06 19:40:37,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:40:37,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573577347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:37,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:40:37,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2021-12-06 19:40:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176061627] [2021-12-06 19:40:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:37,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:40:37,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:40:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:40:37,487 INFO L87 Difference]: Start difference. First operand 1338 states and 1965 transitions. Second operand has 8 states, 6 states have (on average 19.666666666666668) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:37,626 INFO L93 Difference]: Finished difference Result 2597 states and 3841 transitions. [2021-12-06 19:40:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:40:37,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 19.666666666666668) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 196 [2021-12-06 19:40:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:37,633 INFO L225 Difference]: With dead ends: 2597 [2021-12-06 19:40:37,634 INFO L226 Difference]: Without dead ends: 1342 [2021-12-06 19:40:37,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:40:37,637 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 363 mSDsluCounter, 4697 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5548 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:37,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5548 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:40:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-12-06 19:40:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1342. [2021-12-06 19:40:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1029 states have (on average 1.466472303206997) internal successors, (1509), 1047 states have internal predecessors, (1509), 223 states have call successors, (223), 88 states have call predecessors, (223), 89 states have return successors, (239), 219 states have call predecessors, (239), 219 states have call successors, (239) [2021-12-06 19:40:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1971 transitions. [2021-12-06 19:40:37,696 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1971 transitions. Word has length 196 [2021-12-06 19:40:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:37,696 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1971 transitions. [2021-12-06 19:40:37,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 19.666666666666668) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1971 transitions. [2021-12-06 19:40:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-06 19:40:37,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:37,706 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:37,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:40:37,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 19:40:37,908 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:37,908 INFO L85 PathProgramCache]: Analyzing trace with hash -276167897, now seen corresponding path program 1 times [2021-12-06 19:40:37,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:37,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652519965] [2021-12-06 19:40:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:37,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 19:40:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 19:40:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:40:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:40:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:40:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 19:40:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 19:40:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 19:40:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 19:40:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 19:40:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 19:40:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-06 19:40:38,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:38,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652519965] [2021-12-06 19:40:38,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652519965] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:38,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959382915] [2021-12-06 19:40:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:38,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:38,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:38,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:40:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:40:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:38,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:40:38,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959382915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:38,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:40:38,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-12-06 19:40:38,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731303874] [2021-12-06 19:40:38,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:38,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:40:38,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:40:38,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:40:38,498 INFO L87 Difference]: Start difference. First operand 1342 states and 1971 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 19:40:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:38,582 INFO L93 Difference]: Finished difference Result 3236 states and 4763 transitions. [2021-12-06 19:40:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:40:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 204 [2021-12-06 19:40:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:38,594 INFO L225 Difference]: With dead ends: 3236 [2021-12-06 19:40:38,595 INFO L226 Difference]: Without dead ends: 2607 [2021-12-06 19:40:38,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:40:38,597 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 721 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:38,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:40:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-12-06 19:40:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2603. [2021-12-06 19:40:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2009 states have (on average 1.4708810353409656) internal successors, (2955), 2038 states have internal predecessors, (2955), 420 states have call successors, (420), 170 states have call predecessors, (420), 173 states have return successors, (476), 414 states have call predecessors, (476), 414 states have call successors, (476) [2021-12-06 19:40:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3851 transitions. [2021-12-06 19:40:38,705 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3851 transitions. Word has length 204 [2021-12-06 19:40:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:38,706 INFO L470 AbstractCegarLoop]: Abstraction has 2603 states and 3851 transitions. [2021-12-06 19:40:38,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 19:40:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3851 transitions. [2021-12-06 19:40:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 19:40:38,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:38,712 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:38,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:40:38,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:38,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:38,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2122072, now seen corresponding path program 1 times [2021-12-06 19:40:38,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:38,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994415053] [2021-12-06 19:40:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:38,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 19:40:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 19:40:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:40:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:40:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:40:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 19:40:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 19:40:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 19:40:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:40:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 19:40:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:40:39,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994415053] [2021-12-06 19:40:39,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994415053] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:39,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956223227] [2021-12-06 19:40:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:39,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:39,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:39,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:40:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:40:39,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-06 19:40:39,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:40:39,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956223227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:39,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:40:39,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-06 19:40:39,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376021739] [2021-12-06 19:40:39,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:39,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:40:39,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:40:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:40:39,380 INFO L87 Difference]: Start difference. First operand 2603 states and 3851 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 19:40:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:39,512 INFO L93 Difference]: Finished difference Result 5071 states and 7558 transitions. [2021-12-06 19:40:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:40:39,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 197 [2021-12-06 19:40:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:39,530 INFO L225 Difference]: With dead ends: 5071 [2021-12-06 19:40:39,530 INFO L226 Difference]: Without dead ends: 2611 [2021-12-06 19:40:39,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:40:39,534 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 361 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:39,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 3846 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:40:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-12-06 19:40:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-12-06 19:40:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2013 states have (on average 1.469945355191257) internal successors, (2959), 2046 states have internal predecessors, (2959), 420 states have call successors, (420), 170 states have call predecessors, (420), 177 states have return successors, (496), 414 states have call predecessors, (496), 414 states have call successors, (496) [2021-12-06 19:40:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3875 transitions. [2021-12-06 19:40:39,632 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3875 transitions. Word has length 197 [2021-12-06 19:40:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:39,633 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3875 transitions. [2021-12-06 19:40:39,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 19:40:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3875 transitions. [2021-12-06 19:40:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-06 19:40:39,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:39,640 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:39,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:40:39,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:39,840 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1089287723, now seen corresponding path program 1 times [2021-12-06 19:40:39,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:39,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018817237] [2021-12-06 19:40:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:39,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:40:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:40:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:40:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 19:40:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:40:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 19:40:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 19:40:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 19:40:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 19:40:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 19:40:39,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:39,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018817237] [2021-12-06 19:40:39,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018817237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:39,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:39,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:40:39,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46165087] [2021-12-06 19:40:39,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:39,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:40:39,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:39,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:40:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:40:39,980 INFO L87 Difference]: Start difference. First operand 2611 states and 3875 transitions. Second operand has 12 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:41,883 INFO L93 Difference]: Finished difference Result 5539 states and 8628 transitions. [2021-12-06 19:40:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:40:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 198 [2021-12-06 19:40:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:41,898 INFO L225 Difference]: With dead ends: 5539 [2021-12-06 19:40:41,898 INFO L226 Difference]: Without dead ends: 3127 [2021-12-06 19:40:41,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:40:41,903 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 2166 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 4469 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 5374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 4469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:41,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 3631 Invalid, 5374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 4469 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 19:40:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-12-06 19:40:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2611. [2021-12-06 19:40:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2013 states have (on average 1.469945355191257) internal successors, (2959), 2046 states have internal predecessors, (2959), 420 states have call successors, (420), 170 states have call predecessors, (420), 177 states have return successors, (492), 414 states have call predecessors, (492), 414 states have call successors, (492) [2021-12-06 19:40:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3871 transitions. [2021-12-06 19:40:42,033 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3871 transitions. Word has length 198 [2021-12-06 19:40:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:42,034 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3871 transitions. [2021-12-06 19:40:42,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3871 transitions. [2021-12-06 19:40:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-06 19:40:42,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:42,040 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:42,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:40:42,040 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1061799578, now seen corresponding path program 2 times [2021-12-06 19:40:42,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:42,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052572448] [2021-12-06 19:40:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:42,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 19:40:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:40:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 19:40:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:40:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:40:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 19:40:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 19:40:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 19:40:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 19:40:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 19:40:42,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052572448] [2021-12-06 19:40:42,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052572448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:42,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:42,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:40:42,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824313571] [2021-12-06 19:40:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:42,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:40:42,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:40:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:40:42,186 INFO L87 Difference]: Start difference. First operand 2611 states and 3871 transitions. Second operand has 12 states, 10 states have (on average 11.7) internal successors, (117), 8 states have internal predecessors, (117), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:44,014 INFO L93 Difference]: Finished difference Result 5547 states and 8640 transitions. [2021-12-06 19:40:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:40:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.7) internal successors, (117), 8 states have internal predecessors, (117), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 199 [2021-12-06 19:40:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:44,029 INFO L225 Difference]: With dead ends: 5547 [2021-12-06 19:40:44,029 INFO L226 Difference]: Without dead ends: 3135 [2021-12-06 19:40:44,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:40:44,034 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 2170 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 4346 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 5265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 4346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:44,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2170 Valid, 3623 Invalid, 5265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 4346 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 19:40:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2021-12-06 19:40:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2619. [2021-12-06 19:40:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2017 states have (on average 1.4690133862171542) internal successors, (2963), 2054 states have internal predecessors, (2963), 420 states have call successors, (420), 170 states have call predecessors, (420), 181 states have return successors, (500), 414 states have call predecessors, (500), 414 states have call successors, (500) [2021-12-06 19:40:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3883 transitions. [2021-12-06 19:40:44,172 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3883 transitions. Word has length 199 [2021-12-06 19:40:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:44,172 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3883 transitions. [2021-12-06 19:40:44,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.7) internal successors, (117), 8 states have internal predecessors, (117), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3883 transitions. [2021-12-06 19:40:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 19:40:44,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:44,178 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:44,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:40:44,178 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1908376112, now seen corresponding path program 1 times [2021-12-06 19:40:44,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:44,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462578911] [2021-12-06 19:40:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:44,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:40:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 19:40:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:40:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 19:40:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 19:40:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 19:40:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:40:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 19:40:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:40:44,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:44,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462578911] [2021-12-06 19:40:44,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462578911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:44,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:44,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 19:40:44,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489503609] [2021-12-06 19:40:44,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:44,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:40:44,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:40:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:44,322 INFO L87 Difference]: Start difference. First operand 2619 states and 3883 transitions. Second operand has 13 states, 11 states have (on average 11.0) internal successors, (121), 8 states have internal predecessors, (121), 4 states have call successors, (32), 6 states have call predecessors, (32), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:46,428 INFO L93 Difference]: Finished difference Result 6427 states and 10128 transitions. [2021-12-06 19:40:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:40:46,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 8 states have internal predecessors, (121), 4 states have call successors, (32), 6 states have call predecessors, (32), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 200 [2021-12-06 19:40:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:46,449 INFO L225 Difference]: With dead ends: 6427 [2021-12-06 19:40:46,449 INFO L226 Difference]: Without dead ends: 4027 [2021-12-06 19:40:46,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:40:46,455 INFO L933 BasicCegarLoop]: 1072 mSDtfsCounter, 1983 mSDsluCounter, 5444 mSDsCounter, 0 mSdLazyCounter, 5351 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 6242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 5351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:46,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 6516 Invalid, 6242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 5351 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 19:40:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2021-12-06 19:40:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 2639. [2021-12-06 19:40:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2025 states have (on average 1.4671604938271605) internal successors, (2971), 2066 states have internal predecessors, (2971), 424 states have call successors, (424), 170 states have call predecessors, (424), 189 states have return successors, (520), 422 states have call predecessors, (520), 418 states have call successors, (520) [2021-12-06 19:40:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3915 transitions. [2021-12-06 19:40:46,589 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3915 transitions. Word has length 200 [2021-12-06 19:40:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:46,589 INFO L470 AbstractCegarLoop]: Abstraction has 2639 states and 3915 transitions. [2021-12-06 19:40:46,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 8 states have internal predecessors, (121), 4 states have call successors, (32), 6 states have call predecessors, (32), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3915 transitions. [2021-12-06 19:40:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 19:40:46,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:46,595 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:46,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:40:46,595 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash -10879346, now seen corresponding path program 1 times [2021-12-06 19:40:46,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:46,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579908807] [2021-12-06 19:40:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:46,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:40:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 19:40:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:40:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 19:40:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 19:40:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 19:40:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:40:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 19:40:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 19:40:46,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:46,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579908807] [2021-12-06 19:40:46,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579908807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:46,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:46,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:40:46,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626370091] [2021-12-06 19:40:46,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:46,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:40:46,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:40:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:40:46,725 INFO L87 Difference]: Start difference. First operand 2639 states and 3915 transitions. Second operand has 12 states, 10 states have (on average 11.8) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:48,540 INFO L93 Difference]: Finished difference Result 5539 states and 8624 transitions. [2021-12-06 19:40:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:40:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.8) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 200 [2021-12-06 19:40:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:48,555 INFO L225 Difference]: With dead ends: 5539 [2021-12-06 19:40:48,555 INFO L226 Difference]: Without dead ends: 3127 [2021-12-06 19:40:48,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:40:48,560 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 2195 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 4243 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 4243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:48,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 3585 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 4243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 19:40:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-12-06 19:40:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2619. [2021-12-06 19:40:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2017 states have (on average 1.4690133862171542) internal successors, (2963), 2054 states have internal predecessors, (2963), 420 states have call successors, (420), 170 states have call predecessors, (420), 181 states have return successors, (496), 414 states have call predecessors, (496), 414 states have call successors, (496) [2021-12-06 19:40:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3879 transitions. [2021-12-06 19:40:48,678 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3879 transitions. Word has length 200 [2021-12-06 19:40:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:48,678 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3879 transitions. [2021-12-06 19:40:48,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.8) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3879 transitions. [2021-12-06 19:40:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-06 19:40:48,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:48,690 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:48,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:40:48,690 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1677483331, now seen corresponding path program 2 times [2021-12-06 19:40:48,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:48,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67028321] [2021-12-06 19:40:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:48,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:40:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 19:40:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:40:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 19:40:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 19:40:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 19:40:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 19:40:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 19:40:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:40:48,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67028321] [2021-12-06 19:40:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67028321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:48,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:48,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 19:40:48,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564486708] [2021-12-06 19:40:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:48,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:40:48,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:40:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:48,838 INFO L87 Difference]: Start difference. First operand 2619 states and 3879 transitions. Second operand has 13 states, 11 states have (on average 11.090909090909092) internal successors, (122), 8 states have internal predecessors, (122), 4 states have call successors, (32), 6 states have call predecessors, (32), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:51,091 INFO L93 Difference]: Finished difference Result 5535 states and 8628 transitions. [2021-12-06 19:40:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:40:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.090909090909092) internal successors, (122), 8 states have internal predecessors, (122), 4 states have call successors, (32), 6 states have call predecessors, (32), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 201 [2021-12-06 19:40:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:51,102 INFO L225 Difference]: With dead ends: 5535 [2021-12-06 19:40:51,102 INFO L226 Difference]: Without dead ends: 3135 [2021-12-06 19:40:51,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:40:51,107 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 2000 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 6043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:51,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2020 Valid, 4115 Invalid, 6043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 19:40:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2021-12-06 19:40:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2627. [2021-12-06 19:40:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2021 states have (on average 1.4680851063829787) internal successors, (2967), 2062 states have internal predecessors, (2967), 420 states have call successors, (420), 170 states have call predecessors, (420), 185 states have return successors, (516), 414 states have call predecessors, (516), 414 states have call successors, (516) [2021-12-06 19:40:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3903 transitions. [2021-12-06 19:40:51,225 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3903 transitions. Word has length 201 [2021-12-06 19:40:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:51,225 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 3903 transitions. [2021-12-06 19:40:51,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.090909090909092) internal successors, (122), 8 states have internal predecessors, (122), 4 states have call successors, (32), 6 states have call predecessors, (32), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-06 19:40:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3903 transitions. [2021-12-06 19:40:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-06 19:40:51,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:51,230 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:51,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:40:51,231 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:51,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1038796107, now seen corresponding path program 1 times [2021-12-06 19:40:51,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:51,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084377048] [2021-12-06 19:40:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:51,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:40:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 19:40:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:40:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 19:40:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 19:40:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:40:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 19:40:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 19:40:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:51,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084377048] [2021-12-06 19:40:51,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084377048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:40:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439102413] [2021-12-06 19:40:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:51,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:40:51,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:40:51,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:40:51,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:40:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:40:51,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:40:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:51,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:40:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:51,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439102413] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:40:51,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:40:51,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-06 19:40:51,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33957478] [2021-12-06 19:40:51,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:40:51,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:40:51,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:51,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:40:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:40:51,812 INFO L87 Difference]: Start difference. First operand 2627 states and 3903 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 19:40:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:53,405 INFO L93 Difference]: Finished difference Result 6631 states and 10620 transitions. [2021-12-06 19:40:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:40:53,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 202 [2021-12-06 19:40:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:53,420 INFO L225 Difference]: With dead ends: 6631 [2021-12-06 19:40:53,421 INFO L226 Difference]: Without dead ends: 5387 [2021-12-06 19:40:53,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:40:53,433 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 2459 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 1054 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:53,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2513 Valid, 3278 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1054 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:40:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2021-12-06 19:40:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 4783. [2021-12-06 19:40:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 3861 states have (on average 1.5185185185185186) internal successors, (5863), 3902 states have internal predecessors, (5863), 736 states have call successors, (736), 170 states have call predecessors, (736), 185 states have return successors, (872), 730 states have call predecessors, (872), 730 states have call successors, (872) [2021-12-06 19:40:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 7471 transitions. [2021-12-06 19:40:53,643 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 7471 transitions. Word has length 202 [2021-12-06 19:40:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:53,643 INFO L470 AbstractCegarLoop]: Abstraction has 4783 states and 7471 transitions. [2021-12-06 19:40:53,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 19:40:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 7471 transitions. [2021-12-06 19:40:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 19:40:53,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:53,658 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:53,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:40:53,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:40:53,859 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash 594271575, now seen corresponding path program 1 times [2021-12-06 19:40:53,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453248191] [2021-12-06 19:40:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:53,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 19:40:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:40:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:40:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 19:40:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 19:40:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 19:40:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 19:40:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 19:40:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:53,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:53,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453248191] [2021-12-06 19:40:53,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453248191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:53,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:53,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:40:53,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286411658] [2021-12-06 19:40:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:53,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:40:53,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:40:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:40:53,960 INFO L87 Difference]: Start difference. First operand 4783 states and 7471 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:55,364 INFO L93 Difference]: Finished difference Result 11659 states and 18916 transitions. [2021-12-06 19:40:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:40:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 206 [2021-12-06 19:40:55,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:55,381 INFO L225 Difference]: With dead ends: 11659 [2021-12-06 19:40:55,382 INFO L226 Difference]: Without dead ends: 7327 [2021-12-06 19:40:55,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:55,391 INFO L933 BasicCegarLoop]: 909 mSDtfsCounter, 1984 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:55,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2002 Valid, 2199 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 19:40:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2021-12-06 19:40:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 6787. [2021-12-06 19:40:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6787 states, 5549 states have (on average 1.5294647684267435) internal successors, (8487), 5590 states have internal predecessors, (8487), 1052 states have call successors, (1052), 170 states have call predecessors, (1052), 185 states have return successors, (1228), 1046 states have call predecessors, (1228), 1046 states have call successors, (1228) [2021-12-06 19:40:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 10767 transitions. [2021-12-06 19:40:55,675 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 10767 transitions. Word has length 206 [2021-12-06 19:40:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:55,675 INFO L470 AbstractCegarLoop]: Abstraction has 6787 states and 10767 transitions. [2021-12-06 19:40:55,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 10767 transitions. [2021-12-06 19:40:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 19:40:55,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:55,693 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:55,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:40:55,693 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:55,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:55,694 INFO L85 PathProgramCache]: Analyzing trace with hash -358297493, now seen corresponding path program 1 times [2021-12-06 19:40:55,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:55,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202514266] [2021-12-06 19:40:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:55,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 19:40:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:40:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 19:40:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 19:40:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 19:40:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 19:40:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 19:40:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 19:40:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:55,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:55,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202514266] [2021-12-06 19:40:55,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202514266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:55,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:55,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:40:55,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205274585] [2021-12-06 19:40:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:55,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:40:55,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:40:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:40:55,790 INFO L87 Difference]: Start difference. First operand 6787 states and 10767 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:57,303 INFO L93 Difference]: Finished difference Result 16647 states and 27144 transitions. [2021-12-06 19:40:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:40:57,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 207 [2021-12-06 19:40:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:57,327 INFO L225 Difference]: With dead ends: 16647 [2021-12-06 19:40:57,327 INFO L226 Difference]: Without dead ends: 10563 [2021-12-06 19:40:57,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:57,339 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 2012 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 937 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:57,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 2094 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [937 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:40:57,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2021-12-06 19:40:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 10023. [2021-12-06 19:40:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10023 states, 8309 states have (on average 1.5413407148874714) internal successors, (12807), 8350 states have internal predecessors, (12807), 1528 states have call successors, (1528), 170 states have call predecessors, (1528), 185 states have return successors, (1704), 1522 states have call predecessors, (1704), 1522 states have call successors, (1704) [2021-12-06 19:40:57,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10023 states to 10023 states and 16039 transitions. [2021-12-06 19:40:57,756 INFO L78 Accepts]: Start accepts. Automaton has 10023 states and 16039 transitions. Word has length 207 [2021-12-06 19:40:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:57,756 INFO L470 AbstractCegarLoop]: Abstraction has 10023 states and 16039 transitions. [2021-12-06 19:40:57,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 10023 states and 16039 transitions. [2021-12-06 19:40:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 19:40:57,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:57,779 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:40:57,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:40:57,779 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash -425384560, now seen corresponding path program 1 times [2021-12-06 19:40:57,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:57,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104420591] [2021-12-06 19:40:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:57,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:40:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:40:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:40:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:40:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:40:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:40:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:40:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:40:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:40:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:40:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:40:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:40:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:40:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 19:40:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 19:40:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 19:40:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 19:40:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 19:40:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:40:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 19:40:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 19:40:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:40:57,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104420591] [2021-12-06 19:40:57,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104420591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:57,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:57,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:40:57,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728520569] [2021-12-06 19:40:57,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:57,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:40:57,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:40:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:40:57,882 INFO L87 Difference]: Start difference. First operand 10023 states and 16039 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:40:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:59,603 INFO L93 Difference]: Finished difference Result 24243 states and 39772 transitions. [2021-12-06 19:40:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:40:59,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 208 [2021-12-06 19:40:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:59,639 INFO L225 Difference]: With dead ends: 24243 [2021-12-06 19:40:59,639 INFO L226 Difference]: Without dead ends: 15551 [2021-12-06 19:40:59,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:59,651 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1982 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:59,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 2118 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:40:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15551 states. [2021-12-06 19:41:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15551 to 15011. [2021-12-06 19:41:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15011 states, 12649 states have (on average 1.5513479326428967) internal successors, (19623), 12690 states have internal predecessors, (19623), 2176 states have call successors, (2176), 170 states have call predecessors, (2176), 185 states have return successors, (2416), 2170 states have call predecessors, (2416), 2170 states have call successors, (2416) [2021-12-06 19:41:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15011 states to 15011 states and 24215 transitions. [2021-12-06 19:41:00,277 INFO L78 Accepts]: Start accepts. Automaton has 15011 states and 24215 transitions. Word has length 208 [2021-12-06 19:41:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:00,277 INFO L470 AbstractCegarLoop]: Abstraction has 15011 states and 24215 transitions. [2021-12-06 19:41:00,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 15011 states and 24215 transitions. [2021-12-06 19:41:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 19:41:00,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:00,303 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:00,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:41:00,304 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2139031459, now seen corresponding path program 1 times [2021-12-06 19:41:00,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:00,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870965534] [2021-12-06 19:41:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:00,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:41:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:41:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:41:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:41:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:41:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:41:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:41:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:41:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:41:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:41:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:41:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 19:41:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:41:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 19:41:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 19:41:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:41:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 19:41:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 19:41:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 19:41:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:41:00,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870965534] [2021-12-06 19:41:00,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870965534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:00,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:00,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:41:00,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117917760] [2021-12-06 19:41:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:00,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:41:00,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:41:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:41:00,405 INFO L87 Difference]: Start difference. First operand 15011 states and 24215 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:02,420 INFO L93 Difference]: Finished difference Result 36251 states and 59808 transitions. [2021-12-06 19:41:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:41:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2021-12-06 19:41:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:02,484 INFO L225 Difference]: With dead ends: 36251 [2021-12-06 19:41:02,484 INFO L226 Difference]: Without dead ends: 23607 [2021-12-06 19:41:02,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:41:02,506 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 1980 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:02,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1998 Valid, 2112 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:41:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23607 states. [2021-12-06 19:41:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23607 to 23067. [2021-12-06 19:41:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23067 states, 19725 states have (on average 1.5597972116603296) internal successors, (30767), 19766 states have internal predecessors, (30767), 3156 states have call successors, (3156), 170 states have call predecessors, (3156), 185 states have return successors, (3500), 3150 states have call predecessors, (3500), 3150 states have call successors, (3500) [2021-12-06 19:41:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23067 states to 23067 states and 37423 transitions. [2021-12-06 19:41:03,497 INFO L78 Accepts]: Start accepts. Automaton has 23067 states and 37423 transitions. Word has length 209 [2021-12-06 19:41:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:03,498 INFO L470 AbstractCegarLoop]: Abstraction has 23067 states and 37423 transitions. [2021-12-06 19:41:03,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 23067 states and 37423 transitions. [2021-12-06 19:41:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 19:41:03,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:03,544 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:03,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:41:03,544 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:03,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 432958171, now seen corresponding path program 1 times [2021-12-06 19:41:03,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:03,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554563816] [2021-12-06 19:41:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:03,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:41:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:41:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:41:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:41:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:41:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:41:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:41:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:41:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:41:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:41:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:41:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:41:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:41:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 19:41:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 19:41:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 19:41:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 19:41:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 19:41:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:41:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:41:03,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:03,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554563816] [2021-12-06 19:41:03,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554563816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:03,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:03,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:41:03,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545802606] [2021-12-06 19:41:03,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:03,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:41:03,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:41:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:41:03,651 INFO L87 Difference]: Start difference. First operand 23067 states and 37423 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:05,985 INFO L93 Difference]: Finished difference Result 56223 states and 93000 transitions. [2021-12-06 19:41:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:41:05,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 210 [2021-12-06 19:41:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:06,069 INFO L225 Difference]: With dead ends: 56223 [2021-12-06 19:41:06,069 INFO L226 Difference]: Without dead ends: 37107 [2021-12-06 19:41:06,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:41:06,104 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 1993 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:06,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 2166 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 19:41:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37107 states. [2021-12-06 19:41:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37107 to 36567. [2021-12-06 19:41:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36567 states, 31253 states have (on average 1.557066521613925) internal successors, (48663), 31294 states have internal predecessors, (48663), 5128 states have call successors, (5128), 170 states have call predecessors, (5128), 185 states have return successors, (5648), 5122 states have call predecessors, (5648), 5122 states have call successors, (5648) [2021-12-06 19:41:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36567 states to 36567 states and 59439 transitions. [2021-12-06 19:41:07,841 INFO L78 Accepts]: Start accepts. Automaton has 36567 states and 59439 transitions. Word has length 210 [2021-12-06 19:41:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:07,841 INFO L470 AbstractCegarLoop]: Abstraction has 36567 states and 59439 transitions. [2021-12-06 19:41:07,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 36567 states and 59439 transitions. [2021-12-06 19:41:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-06 19:41:07,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:07,955 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:07,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:41:07,956 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:07,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1179852200, now seen corresponding path program 1 times [2021-12-06 19:41:07,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:07,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669902761] [2021-12-06 19:41:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:07,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:41:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:41:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:41:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:41:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:41:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:41:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:41:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:41:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:41:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:41:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:41:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:41:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:41:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 19:41:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 19:41:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 19:41:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:41:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 19:41:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 19:41:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:41:08,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:08,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669902761] [2021-12-06 19:41:08,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669902761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:08,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:08,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:41:08,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920605509] [2021-12-06 19:41:08,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:08,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:41:08,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:41:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:41:08,040 INFO L87 Difference]: Start difference. First operand 36567 states and 59439 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:11,030 INFO L93 Difference]: Finished difference Result 92035 states and 152504 transitions. [2021-12-06 19:41:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:41:11,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2021-12-06 19:41:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:11,180 INFO L225 Difference]: With dead ends: 92035 [2021-12-06 19:41:11,180 INFO L226 Difference]: Without dead ends: 61403 [2021-12-06 19:41:11,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:41:11,228 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 1966 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:11,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1984 Valid, 2128 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 19:41:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61403 states. [2021-12-06 19:41:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61403 to 60863. [2021-12-06 19:41:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60863 states, 52261 states have (on average 1.5627523392204512) internal successors, (81671), 52302 states have internal predecessors, (81671), 8416 states have call successors, (8416), 170 states have call predecessors, (8416), 185 states have return successors, (9248), 8410 states have call predecessors, (9248), 8410 states have call successors, (9248) [2021-12-06 19:41:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60863 states to 60863 states and 99335 transitions. [2021-12-06 19:41:14,038 INFO L78 Accepts]: Start accepts. Automaton has 60863 states and 99335 transitions. Word has length 211 [2021-12-06 19:41:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:14,038 INFO L470 AbstractCegarLoop]: Abstraction has 60863 states and 99335 transitions. [2021-12-06 19:41:14,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 60863 states and 99335 transitions. [2021-12-06 19:41:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-06 19:41:14,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:14,121 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:14,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:41:14,121 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1594227532, now seen corresponding path program 1 times [2021-12-06 19:41:14,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:14,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875157433] [2021-12-06 19:41:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:14,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:41:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:41:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:41:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:41:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:41:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:41:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:41:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:41:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:41:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:41:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:41:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:41:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:41:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 19:41:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 19:41:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 19:41:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 19:41:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 19:41:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 19:41:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:41:14,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875157433] [2021-12-06 19:41:14,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875157433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:14,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:14,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:41:14,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379801933] [2021-12-06 19:41:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:14,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:41:14,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:41:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:41:14,219 INFO L87 Difference]: Start difference. First operand 60863 states and 99335 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:18,704 INFO L93 Difference]: Finished difference Result 147271 states and 242040 transitions. [2021-12-06 19:41:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:41:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 212 [2021-12-06 19:41:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:18,981 INFO L225 Difference]: With dead ends: 147271 [2021-12-06 19:41:18,981 INFO L226 Difference]: Without dead ends: 96879 [2021-12-06 19:41:19,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:41:19,077 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 1960 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:19,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 2175 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 19:41:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96879 states. [2021-12-06 19:41:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96879 to 96339. [2021-12-06 19:41:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96339 states, 82925 states have (on average 1.5356406391317456) internal successors, (127343), 82966 states have internal predecessors, (127343), 13228 states have call successors, (13228), 170 states have call predecessors, (13228), 185 states have return successors, (14636), 13222 states have call predecessors, (14636), 13222 states have call successors, (14636) [2021-12-06 19:41:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96339 states to 96339 states and 155207 transitions. [2021-12-06 19:41:23,578 INFO L78 Accepts]: Start accepts. Automaton has 96339 states and 155207 transitions. Word has length 212 [2021-12-06 19:41:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:23,578 INFO L470 AbstractCegarLoop]: Abstraction has 96339 states and 155207 transitions. [2021-12-06 19:41:23,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 96339 states and 155207 transitions. [2021-12-06 19:41:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-06 19:41:23,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:23,689 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:23,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:41:23,689 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1967246448, now seen corresponding path program 1 times [2021-12-06 19:41:23,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:23,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161283044] [2021-12-06 19:41:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:23,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:41:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:41:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:41:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:41:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:41:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:41:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:41:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:41:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:41:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:41:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:41:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 19:41:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:41:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 19:41:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 19:41:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 19:41:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 19:41:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 19:41:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 19:41:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:41:23,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:23,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161283044] [2021-12-06 19:41:23,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161283044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:23,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:23,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:41:23,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070418790] [2021-12-06 19:41:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:23,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:41:23,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:41:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:41:23,779 INFO L87 Difference]: Start difference. First operand 96339 states and 155207 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:31,083 INFO L93 Difference]: Finished difference Result 254683 states and 416792 transitions. [2021-12-06 19:41:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:41:31,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 213 [2021-12-06 19:41:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:31,552 INFO L225 Difference]: With dead ends: 254683 [2021-12-06 19:41:31,553 INFO L226 Difference]: Without dead ends: 172063 [2021-12-06 19:41:31,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:41:31,680 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1973 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:31,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 2121 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:41:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172063 states. [2021-12-06 19:41:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172063 to 171523. [2021-12-06 19:41:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171523 states, 148309 states have (on average 1.5355979744991874) internal successors, (227743), 148350 states have internal predecessors, (227743), 23028 states have call successors, (23028), 170 states have call predecessors, (23028), 185 states have return successors, (25532), 23022 states have call predecessors, (25532), 23022 states have call successors, (25532) [2021-12-06 19:41:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171523 states to 171523 states and 276303 transitions. [2021-12-06 19:41:39,471 INFO L78 Accepts]: Start accepts. Automaton has 171523 states and 276303 transitions. Word has length 213 [2021-12-06 19:41:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:39,471 INFO L470 AbstractCegarLoop]: Abstraction has 171523 states and 276303 transitions. [2021-12-06 19:41:39,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 171523 states and 276303 transitions. [2021-12-06 19:41:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 19:41:39,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:39,621 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:39,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 19:41:39,621 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1868323041, now seen corresponding path program 1 times [2021-12-06 19:41:39,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316532928] [2021-12-06 19:41:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:39,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:41:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:41:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:41:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:41:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:41:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:41:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:41:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:41:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:41:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:41:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:41:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:41:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 19:41:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 19:41:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 19:41:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 19:41:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 19:41:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 19:41:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 19:41:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:41:39,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:39,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316532928] [2021-12-06 19:41:39,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316532928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:39,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:39,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:41:39,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732788986] [2021-12-06 19:41:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:39,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:41:39,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:41:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:41:39,715 INFO L87 Difference]: Start difference. First operand 171523 states and 276303 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:41:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:51,715 INFO L93 Difference]: Finished difference Result 465331 states and 760608 transitions. [2021-12-06 19:41:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:41:51,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 214 [2021-12-06 19:41:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:52,644 INFO L225 Difference]: With dead ends: 465331 [2021-12-06 19:41:52,644 INFO L226 Difference]: Without dead ends: 312231 [2021-12-06 19:41:52,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:41:52,879 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 1958 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:52,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 2129 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:41:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312231 states. [2021-12-06 19:42:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312231 to 311691. [2021-12-06 19:42:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311691 states, 270425 states have (on average 1.539173523157992) internal successors, (416231), 270466 states have internal predecessors, (416231), 41080 states have call successors, (41080), 170 states have call predecessors, (41080), 185 states have return successors, (45712), 41074 states have call predecessors, (45712), 41074 states have call successors, (45712) [2021-12-06 19:42:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311691 states to 311691 states and 503023 transitions. [2021-12-06 19:42:08,019 INFO L78 Accepts]: Start accepts. Automaton has 311691 states and 503023 transitions. Word has length 214 [2021-12-06 19:42:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:08,020 INFO L470 AbstractCegarLoop]: Abstraction has 311691 states and 503023 transitions. [2021-12-06 19:42:08,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:42:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 311691 states and 503023 transitions. [2021-12-06 19:42:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-06 19:42:08,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:08,211 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:08,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 19:42:08,211 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:42:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2128868202, now seen corresponding path program 1 times [2021-12-06 19:42:08,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:42:08,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912932435] [2021-12-06 19:42:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:08,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:42:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:42:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:42:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:42:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:42:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:42:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:42:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:42:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:42:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:42:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:42:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:42:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:42:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:42:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:42:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:42:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 19:42:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 19:42:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:42:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:42:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 19:42:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 19:42:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-06 19:42:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:42:08,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:42:08,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912932435] [2021-12-06 19:42:08,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912932435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:08,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:08,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:42:08,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484918134] [2021-12-06 19:42:08,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:08,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:42:08,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:42:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:42:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:42:08,314 INFO L87 Difference]: Start difference. First operand 311691 states and 503023 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:42:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:28,681 INFO L93 Difference]: Finished difference Result 583175 states and 957652 transitions. [2021-12-06 19:42:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:42:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 215 [2021-12-06 19:42:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:30,673 INFO L225 Difference]: With dead ends: 583175 [2021-12-06 19:42:30,673 INFO L226 Difference]: Without dead ends: 581931 [2021-12-06 19:42:30,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:42:30,834 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 1987 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:30,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 2114 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:42:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581931 states. [2021-12-06 19:42:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581931 to 581391. [2021-12-06 19:42:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581391 states, 506653 states have (on average 1.538242149952729) internal successors, (779355), 506694 states have internal predecessors, (779355), 74552 states have call successors, (74552), 170 states have call predecessors, (74552), 185 states have return successors, (83368), 74546 states have call predecessors, (83368), 74546 states have call successors, (83368) [2021-12-06 19:42:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581391 states to 581391 states and 937275 transitions. [2021-12-06 19:42:59,060 INFO L78 Accepts]: Start accepts. Automaton has 581391 states and 937275 transitions. Word has length 215 [2021-12-06 19:42:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:59,061 INFO L470 AbstractCegarLoop]: Abstraction has 581391 states and 937275 transitions. [2021-12-06 19:42:59,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 19:42:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 581391 states and 937275 transitions. [2021-12-06 19:42:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-06 19:42:59,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:59,284 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:59,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 19:42:59,284 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:42:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1915923863, now seen corresponding path program 1 times [2021-12-06 19:42:59,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:42:59,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396529859] [2021-12-06 19:42:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:59,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:42:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:42:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:42:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:42:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:42:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:42:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:42:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:42:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:42:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:42:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:42:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:42:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:42:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:42:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:42:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:42:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:42:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:42:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 19:42:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 19:42:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 19:42:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:42:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 19:42:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:42:59,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:42:59,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396529859] [2021-12-06 19:42:59,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396529859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:59,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:59,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 19:42:59,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805702082] [2021-12-06 19:42:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:59,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:42:59,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:42:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:42:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:42:59,449 INFO L87 Difference]: Start difference. First operand 581391 states and 937275 transitions. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 7 states have internal predecessors, (132), 6 states have call successors, (32), 8 states have call predecessors, (32), 2 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-06 19:43:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:25,918 INFO L93 Difference]: Finished difference Result 587877 states and 962720 transitions. [2021-12-06 19:43:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:43:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 7 states have internal predecessors, (132), 6 states have call successors, (32), 8 states have call predecessors, (32), 2 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 216 [2021-12-06 19:43:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:28,019 INFO L225 Difference]: With dead ends: 587877 [2021-12-06 19:43:28,019 INFO L226 Difference]: Without dead ends: 586665 [2021-12-06 19:43:28,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 19:43:28,189 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 4770 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 7631 mSolverCounterSat, 3195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4770 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 10826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3195 IncrementalHoareTripleChecker+Valid, 7631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:28,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4770 Valid, 3635 Invalid, 10826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3195 Valid, 7631 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-06 19:43:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586665 states. [2021-12-06 19:43:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586665 to 584879. [2021-12-06 19:43:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584879 states, 509179 states have (on average 1.537516276201493) internal successors, (782871), 509290 states have internal predecessors, (782871), 75154 states have call successors, (75154), 506 states have call predecessors, (75154), 545 states have return successors, (84286), 75160 states have call predecessors, (84286), 75112 states have call successors, (84286) [2021-12-06 19:43:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584879 states to 584879 states and 942311 transitions. [2021-12-06 19:43:59,441 INFO L78 Accepts]: Start accepts. Automaton has 584879 states and 942311 transitions. Word has length 216 [2021-12-06 19:43:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:59,442 INFO L470 AbstractCegarLoop]: Abstraction has 584879 states and 942311 transitions. [2021-12-06 19:43:59,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 7 states have internal predecessors, (132), 6 states have call successors, (32), 8 states have call predecessors, (32), 2 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-06 19:43:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 584879 states and 942311 transitions. [2021-12-06 19:43:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-06 19:43:59,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:59,865 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:59,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 19:43:59,866 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:43:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1782842352, now seen corresponding path program 1 times [2021-12-06 19:43:59,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:43:59,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269629336] [2021-12-06 19:43:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:59,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:43:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:43:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:43:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:43:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:43:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:43:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:43:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:43:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:43:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:43:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:44:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:44:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:44:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:44:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:44:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:44:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:44:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:44:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 19:44:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 19:44:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 19:44:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 19:44:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 19:44:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 19:44:00,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:44:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269629336] [2021-12-06 19:44:00,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269629336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:44:00,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:44:00,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-06 19:44:00,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722800139] [2021-12-06 19:44:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:44:00,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 19:44:00,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:44:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 19:44:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:44:00,077 INFO L87 Difference]: Start difference. First operand 584879 states and 942311 transitions. Second operand has 21 states, 19 states have (on average 7.0) internal successors, (133), 13 states have internal predecessors, (133), 9 states have call successors, (32), 10 states have call predecessors, (32), 2 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-06 19:44:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:26,208 INFO L93 Difference]: Finished difference Result 590166 states and 967085 transitions. [2021-12-06 19:44:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 19:44:26,208 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.0) internal successors, (133), 13 states have internal predecessors, (133), 9 states have call successors, (32), 10 states have call predecessors, (32), 2 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 217 [2021-12-06 19:44:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:28,158 INFO L225 Difference]: With dead ends: 590166 [2021-12-06 19:44:28,158 INFO L226 Difference]: Without dead ends: 587597 [2021-12-06 19:44:28,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=547, Invalid=3485, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:44:28,330 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 2327 mSDsluCounter, 6678 mSDsCounter, 0 mSdLazyCounter, 10978 mSolverCounterSat, 1368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 7534 SdHoareTripleChecker+Invalid, 12346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1368 IncrementalHoareTripleChecker+Valid, 10978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:28,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2327 Valid, 7534 Invalid, 12346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1368 Valid, 10978 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-06 19:44:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587597 states. [2021-12-06 19:44:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587597 to 585348. [2021-12-06 19:44:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585348 states, 509454 states have (on average 1.5373674561393178) internal successors, (783218), 509595 states have internal predecessors, (783218), 75322 states have call successors, (75322), 530 states have call predecessors, (75322), 571 states have return successors, (84478), 75312 states have call predecessors, (84478), 75240 states have call successors, (84478) [2021-12-06 19:45:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585348 states to 585348 states and 943018 transitions. [2021-12-06 19:45:00,442 INFO L78 Accepts]: Start accepts. Automaton has 585348 states and 943018 transitions. Word has length 217 [2021-12-06 19:45:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:00,443 INFO L470 AbstractCegarLoop]: Abstraction has 585348 states and 943018 transitions. [2021-12-06 19:45:00,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.0) internal successors, (133), 13 states have internal predecessors, (133), 9 states have call successors, (32), 10 states have call predecessors, (32), 2 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-06 19:45:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 585348 states and 943018 transitions. [2021-12-06 19:45:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 19:45:00,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:00,705 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:00,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 19:45:00,705 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1727134988, now seen corresponding path program 1 times [2021-12-06 19:45:00,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:00,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798716582] [2021-12-06 19:45:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:00,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:45:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:45:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:45:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:45:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:45:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:45:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:45:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:45:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:45:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:45:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:45:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:45:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:45:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:45:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:45:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:45:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:45:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 19:45:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 19:45:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 19:45:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:45:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 19:45:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 19:45:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-06 19:45:00,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:00,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798716582] [2021-12-06 19:45:00,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798716582] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:45:00,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332401286] [2021-12-06 19:45:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:00,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:00,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:00,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:45:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:01,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 19:45:01,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 19:45:01,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:45:01,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332401286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:01,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:45:01,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [26] total 40 [2021-12-06 19:45:01,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909258939] [2021-12-06 19:45:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:01,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:45:01,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:45:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:45:01,550 INFO L87 Difference]: Start difference. First operand 585348 states and 943018 transitions. Second operand has 16 states, 15 states have (on average 9.866666666666667) internal successors, (148), 13 states have internal predecessors, (148), 7 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 19:45:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:25,368 INFO L93 Difference]: Finished difference Result 593701 states and 955956 transitions. [2021-12-06 19:45:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 19:45:25,369 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.866666666666667) internal successors, (148), 13 states have internal predecessors, (148), 7 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) Word has length 227 [2021-12-06 19:45:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:27,337 INFO L225 Difference]: With dead ends: 593701 [2021-12-06 19:45:27,338 INFO L226 Difference]: Without dead ends: 591363 [2021-12-06 19:45:27,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=3149, Unknown=0, NotChecked=0, Total=3422 [2021-12-06 19:45:27,634 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1567 mSDsluCounter, 11791 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 12760 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:27,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 12760 Invalid, 1451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [391 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:45:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591363 states. [2021-12-06 19:45:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591363 to 591162. [2021-12-06 19:45:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591162 states, 513562 states have (on average 1.5360209672834049) internal successors, (788842), 513861 states have internal predecessors, (788842), 76450 states have call successors, (76450), 1018 states have call predecessors, (76450), 1149 states have return successors, (86935), 76470 states have call predecessors, (86935), 76288 states have call successors, (86935) [2021-12-06 19:45:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591162 states to 591162 states and 952227 transitions. [2021-12-06 19:45:59,170 INFO L78 Accepts]: Start accepts. Automaton has 591162 states and 952227 transitions. Word has length 227 [2021-12-06 19:45:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:59,170 INFO L470 AbstractCegarLoop]: Abstraction has 591162 states and 952227 transitions. [2021-12-06 19:45:59,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.866666666666667) internal successors, (148), 13 states have internal predecessors, (148), 7 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 19:45:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 591162 states and 952227 transitions. [2021-12-06 19:45:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-06 19:45:59,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:59,602 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:59,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 19:45:59,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:59,805 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 168339265, now seen corresponding path program 1 times [2021-12-06 19:45:59,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:59,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250497456] [2021-12-06 19:45:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:59,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:45:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:45:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:45:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:45:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:45:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:45:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:45:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 19:45:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:45:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:45:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:45:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 19:46:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 19:46:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:46:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:46:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 19:46:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:46:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 19:46:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 19:46:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 19:46:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 19:46:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 19:46:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 19:46:00,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250497456] [2021-12-06 19:46:00,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250497456] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:46:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443095244] [2021-12-06 19:46:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:00,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:00,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:00,101 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:46:00,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:46:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:00,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 19:46:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:46:01,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:46:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-06 19:46:01,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443095244] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:01,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:46:01,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 21] total 64 [2021-12-06 19:46:01,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225214108] [2021-12-06 19:46:01,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:01,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-06 19:46:01,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-06 19:46:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3804, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:46:01,703 INFO L87 Difference]: Start difference. First operand 591162 states and 952227 transitions. Second operand has 64 states, 52 states have (on average 7.1923076923076925) internal successors, (374), 57 states have internal predecessors, (374), 25 states have call successors, (94), 15 states have call predecessors, (94), 22 states have return successors, (75), 19 states have call predecessors, (75), 24 states have call successors, (75) [2021-12-06 19:47:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:47,340 INFO L93 Difference]: Finished difference Result 1809977 states and 3026023 transitions. [2021-12-06 19:47:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-06 19:47:47,341 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 52 states have (on average 7.1923076923076925) internal successors, (374), 57 states have internal predecessors, (374), 25 states have call successors, (94), 15 states have call predecessors, (94), 22 states have return successors, (75), 19 states have call predecessors, (75), 24 states have call successors, (75) Word has length 221 [2021-12-06 19:47:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:54,732 INFO L225 Difference]: With dead ends: 1809977 [2021-12-06 19:47:54,732 INFO L226 Difference]: Without dead ends: 1799894 [2021-12-06 19:47:55,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4798 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2194, Invalid=16712, Unknown=0, NotChecked=0, Total=18906 [2021-12-06 19:47:55,426 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 14822 mSDsluCounter, 11276 mSDsCounter, 0 mSdLazyCounter, 54940 mSolverCounterSat, 8115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14822 SdHoareTripleChecker+Valid, 12297 SdHoareTripleChecker+Invalid, 63055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8115 IncrementalHoareTripleChecker+Valid, 54940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:55,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14822 Valid, 12297 Invalid, 63055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8115 Valid, 54940 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2021-12-06 19:47:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799894 states. [2021-12-06 19:49:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799894 to 1772301. [2021-12-06 19:49:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772301 states, 1538735 states have (on average 1.5354554227985975) internal successors, (2362659), 1539446 states have internal predecessors, (2362659), 229230 states have call successors, (229230), 2962 states have call predecessors, (229230), 4335 states have return successors, (305097), 230706 states have call predecessors, (305097), 228748 states have call successors, (305097) [2021-12-06 19:49:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772301 states to 1772301 states and 2896986 transitions. [2021-12-06 19:49:58,214 INFO L78 Accepts]: Start accepts. Automaton has 1772301 states and 2896986 transitions. Word has length 221 [2021-12-06 19:49:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 1772301 states and 2896986 transitions. [2021-12-06 19:49:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 52 states have (on average 7.1923076923076925) internal successors, (374), 57 states have internal predecessors, (374), 25 states have call successors, (94), 15 states have call predecessors, (94), 22 states have return successors, (75), 19 states have call predecessors, (75), 24 states have call successors, (75) [2021-12-06 19:49:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1772301 states and 2896986 transitions. [2021-12-06 19:49:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-06 19:49:59,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:59,164 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:59,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d18114a-4f6d-404c-8173-1609b6500bc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0