./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product33.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_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/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_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/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_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/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 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:52:45,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:52:45,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:52:45,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:52:45,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:52:45,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:52:45,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:52:45,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:52:45,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:52:45,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:52:45,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:52:45,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:52:45,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:52:45,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:52:45,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:52:45,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:52:45,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:52:45,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:52:45,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:52:45,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:52:45,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:52:45,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:52:45,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:52:45,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:52:45,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:52:45,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:52:45,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:52:45,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:52:45,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:52:45,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:52:45,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:52:45,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:52:45,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:52:45,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:52:45,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:52:45,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:52:45,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:52:45,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:52:45,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:52:45,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:52:45,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:52:45,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:52:46,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:52:46,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:52:46,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:52:46,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:52:46,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:52:46,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:52:46,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:52:46,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:52:46,017 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:52:46,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:52:46,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:52:46,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:52:46,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:52:46,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:52:46,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:52:46,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:52:46,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:52:46,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:52:46,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:52:46,018 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:52:46,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:52:46,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:52:46,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:52:46,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:52:46,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:52:46,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:52:46,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:52:46,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:52:46,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:52:46,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:52:46,020 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:52:46,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:52:46,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:52:46,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:52:46,020 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_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 [2021-12-06 21:52:46,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:52:46,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:52:46,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:52:46,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:52:46,233 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:52:46,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2021-12-06 21:52:46,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/data/1ca904729/3d8aa91ce0b540dab0390ceba7ec2743/FLAG089cfa966 [2021-12-06 21:52:46,719 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:52:46,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2021-12-06 21:52:46,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/data/1ca904729/3d8aa91ce0b540dab0390ceba7ec2743/FLAG089cfa966 [2021-12-06 21:52:46,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/data/1ca904729/3d8aa91ce0b540dab0390ceba7ec2743 [2021-12-06 21:52:46,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:52:46,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:52:46,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:52:46,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:52:46,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:52:46,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:52:46" (1/1) ... [2021-12-06 21:52:46,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a2802e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:46, skipping insertion in model container [2021-12-06 21:52:46,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:52:46" (1/1) ... [2021-12-06 21:52:46,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:52:46,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:52:47,015 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_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2021-12-06 21:52:47,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:52:47,219 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:52:47,250 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_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2021-12-06 21:52:47,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:52:47,346 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:52:47,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47 WrapperNode [2021-12-06 21:52:47,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:52:47,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:52:47,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:52:47,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:52:47,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,426 INFO L137 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1084 [2021-12-06 21:52:47,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:52:47,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:52:47,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:52:47,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:52:47,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:52:47,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:52:47,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:52:47,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:52:47,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (1/1) ... [2021-12-06 21:52:47,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:52:47,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:47,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:52:47,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:52:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 21:52:47,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 21:52:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 21:52:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 21:52:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 21:52:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 21:52:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 21:52:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 21:52:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 21:52:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 21:52:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 21:52:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 21:52:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 21:52:47,544 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 21:52:47,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 21:52:47,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 21:52:47,544 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 21:52:47,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 21:52:47,544 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 21:52:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 21:52:47,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 21:52:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:52:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 21:52:47,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 21:52:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 21:52:47,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 21:52:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 21:52:47,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 21:52:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 21:52:47,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 21:52:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 21:52:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 21:52:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 21:52:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 21:52:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 21:52:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 21:52:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 21:52:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 21:52:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 21:52:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 21:52:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 21:52:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 21:52:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:52:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 21:52:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 21:52:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:52:47,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:52:47,698 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:52:47,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:52:48,173 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:52:48,185 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:52:48,185 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:52:48,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:52:48 BoogieIcfgContainer [2021-12-06 21:52:48,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:52:48,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:52:48,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:52:48,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:52:48,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:52:46" (1/3) ... [2021-12-06 21:52:48,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d779353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:52:48, skipping insertion in model container [2021-12-06 21:52:48,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:52:47" (2/3) ... [2021-12-06 21:52:48,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d779353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:52:48, skipping insertion in model container [2021-12-06 21:52:48,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:52:48" (3/3) ... [2021-12-06 21:52:48,195 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2021-12-06 21:52:48,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:52:48,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:52:48,241 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:52:48,248 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 21:52:48,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:52:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-12-06 21:52:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 21:52:48,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:48,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-06 21:52:48,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash 827259601, now seen corresponding path program 1 times [2021-12-06 21:52:48,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:48,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756614808] [2021-12-06 21:52:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:48,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:52:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:52:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:52:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:52:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 21:52:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 21:52:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:52:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:52:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:52:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:52:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:52:48,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:48,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756614808] [2021-12-06 21:52:48,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756614808] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:52:48,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794014057] [2021-12-06 21:52:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:48,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:48,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:48,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:48,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:52:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:48,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 21:52:48,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:52:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:52:49,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:52:49,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794014057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:49,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:52:49,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 21:52:49,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497276195] [2021-12-06 21:52:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:49,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:52:49,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:52:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:52:49,055 INFO L87 Difference]: Start difference. First operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:52:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:49,113 INFO L93 Difference]: Finished difference Result 619 states and 898 transitions. [2021-12-06 21:52:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:52:49,116 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2021-12-06 21:52:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:49,132 INFO L225 Difference]: With dead ends: 619 [2021-12-06 21:52:49,132 INFO L226 Difference]: Without dead ends: 382 [2021-12-06 21:52:49,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:52:49,141 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:49,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:52:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-06 21:52:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-12-06 21:52:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 294 states have (on average 1.4931972789115646) internal successors, (439), 297 states have internal predecessors, (439), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-06 21:52:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 564 transitions. [2021-12-06 21:52:49,205 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 564 transitions. Word has length 101 [2021-12-06 21:52:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:49,207 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 564 transitions. [2021-12-06 21:52:49,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:52:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 564 transitions. [2021-12-06 21:52:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 21:52:49,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:49,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-06 21:52:49,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:52:49,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 21:52:49,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1955888924, now seen corresponding path program 1 times [2021-12-06 21:52:49,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:49,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726396055] [2021-12-06 21:52:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:49,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:52:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:52:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:52:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:52:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 21:52:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:52:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:52:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:52:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:52:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:52:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:52:49,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:49,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726396055] [2021-12-06 21:52:49,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726396055] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:52:49,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794740831] [2021-12-06 21:52:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:49,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:49,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:49,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:49,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:52:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:49,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:52:49,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:52:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:52:49,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:52:49,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794740831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:49,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:52:49,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 21:52:49,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807264099] [2021-12-06 21:52:49,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:49,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:52:49,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:52:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:52:49,844 INFO L87 Difference]: Start difference. First operand 382 states and 564 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:52:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:49,873 INFO L93 Difference]: Finished difference Result 609 states and 879 transitions. [2021-12-06 21:52:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:52:49,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2021-12-06 21:52:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:49,877 INFO L225 Difference]: With dead ends: 609 [2021-12-06 21:52:49,877 INFO L226 Difference]: Without dead ends: 385 [2021-12-06 21:52:49,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:52:49,879 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1122 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 21:52:49,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:52:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-06 21:52:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2021-12-06 21:52:49,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-06 21:52:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 566 transitions. [2021-12-06 21:52:49,915 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 566 transitions. Word has length 102 [2021-12-06 21:52:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:49,916 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 566 transitions. [2021-12-06 21:52:49,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:52:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 566 transitions. [2021-12-06 21:52:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 21:52:49,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:49,918 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:49,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:52:50,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:50,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash -745029444, now seen corresponding path program 1 times [2021-12-06 21:52:50,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:50,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230849361] [2021-12-06 21:52:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:50,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:52:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:52:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:52:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 21:52:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:52:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:52:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:52:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:52:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:52:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:52:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:52:50,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230849361] [2021-12-06 21:52:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230849361] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:52:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442975741] [2021-12-06 21:52:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:50,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:50,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:50,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:50,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:52:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:52:50,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:52:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:52:50,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:52:50,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442975741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:50,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:52:50,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 21:52:50,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916802961] [2021-12-06 21:52:50,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:50,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:52:50,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:52:50,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:52:50,615 INFO L87 Difference]: Start difference. First operand 384 states and 566 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:52:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:50,645 INFO L93 Difference]: Finished difference Result 803 states and 1199 transitions. [2021-12-06 21:52:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:52:50,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2021-12-06 21:52:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:50,649 INFO L225 Difference]: With dead ends: 803 [2021-12-06 21:52:50,649 INFO L226 Difference]: Without dead ends: 446 [2021-12-06 21:52:50,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:52:50,652 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 115 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1096 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 21:52:50,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1096 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:52:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-12-06 21:52:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 438. [2021-12-06 21:52:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.5073746312684366) internal successors, (511), 342 states have internal predecessors, (511), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-06 21:52:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 658 transitions. [2021-12-06 21:52:50,675 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 658 transitions. Word has length 111 [2021-12-06 21:52:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:50,675 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 658 transitions. [2021-12-06 21:52:50,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:52:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 658 transitions. [2021-12-06 21:52:50,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 21:52:50,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:50,678 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:50,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:52:50,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 21:52:50,879 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1339832561, now seen corresponding path program 1 times [2021-12-06 21:52:50,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:50,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499656626] [2021-12-06 21:52:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:50,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:52:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:52:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:52:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 21:52:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 21:52:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:52:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:52:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:52:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:52:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:52:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:52:51,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499656626] [2021-12-06 21:52:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499656626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:52:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627964355] [2021-12-06 21:52:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:51,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:51,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:51,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:51,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:52:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:52:51,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:52:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 21:52:51,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:52:51,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627964355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:51,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:52:51,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 21:52:51,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008953865] [2021-12-06 21:52:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:51,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:52:51,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:52:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:52:51,388 INFO L87 Difference]: Start difference. First operand 438 states and 658 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:51,458 INFO L93 Difference]: Finished difference Result 867 states and 1306 transitions. [2021-12-06 21:52:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:52:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-12-06 21:52:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:51,463 INFO L225 Difference]: With dead ends: 867 [2021-12-06 21:52:51,463 INFO L226 Difference]: Without dead ends: 440 [2021-12-06 21:52:51,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:52:51,466 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 133 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:51,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2068 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:52:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-12-06 21:52:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-12-06 21:52:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 340 states have (on average 1.5058823529411764) internal successors, (512), 344 states have internal predecessors, (512), 74 states have call successors, (74), 24 states have call predecessors, (74), 25 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) [2021-12-06 21:52:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 661 transitions. [2021-12-06 21:52:51,491 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 661 transitions. Word has length 112 [2021-12-06 21:52:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:51,492 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 661 transitions. [2021-12-06 21:52:51,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 661 transitions. [2021-12-06 21:52:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 21:52:51,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:51,495 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:51,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:52:51,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:51,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash -345346834, now seen corresponding path program 1 times [2021-12-06 21:52:51,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:51,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566862743] [2021-12-06 21:52:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:51,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:52:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 21:52:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 21:52:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 21:52:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:52:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:52:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:52:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:52:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:52:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:52:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:52:51,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:51,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566862743] [2021-12-06 21:52:51,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566862743] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:52:51,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487603766] [2021-12-06 21:52:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:51,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:51,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:51,834 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:51,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:52:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:51,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:52:51,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:52:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 21:52:52,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:52:52,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487603766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:52,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:52:52,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 21:52:52,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137753796] [2021-12-06 21:52:52,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:52,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:52:52,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:52:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:52:52,121 INFO L87 Difference]: Start difference. First operand 440 states and 661 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:52,178 INFO L93 Difference]: Finished difference Result 869 states and 1311 transitions. [2021-12-06 21:52:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:52:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-12-06 21:52:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:52,182 INFO L225 Difference]: With dead ends: 869 [2021-12-06 21:52:52,182 INFO L226 Difference]: Without dead ends: 442 [2021-12-06 21:52:52,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:52:52,184 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 132 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:52,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2057 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:52:52,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-06 21:52:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-12-06 21:52:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-06 21:52:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 667 transitions. [2021-12-06 21:52:52,202 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 667 transitions. Word has length 113 [2021-12-06 21:52:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:52,203 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 667 transitions. [2021-12-06 21:52:52,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 667 transitions. [2021-12-06 21:52:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 21:52:52,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:52,205 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:52,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:52:52,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:52,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1612890018, now seen corresponding path program 1 times [2021-12-06 21:52:52,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043325331] [2021-12-06 21:52:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:52,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:52:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:52:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 21:52:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 21:52:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 21:52:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:52:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:52:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:52:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:52:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:52:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:52:52,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043325331] [2021-12-06 21:52:52,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043325331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:52,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:52:52,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:52:52,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830667363] [2021-12-06 21:52:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:52,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:52:52,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:52,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:52:52,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:52:52,498 INFO L87 Difference]: Start difference. First operand 442 states and 667 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:53,915 INFO L93 Difference]: Finished difference Result 1076 states and 1633 transitions. [2021-12-06 21:52:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:52:53,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-06 21:52:53,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:53,922 INFO L225 Difference]: With dead ends: 1076 [2021-12-06 21:52:53,922 INFO L226 Difference]: Without dead ends: 657 [2021-12-06 21:52:53,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:52:53,925 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1475 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:53,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 1870 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 21:52:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-06 21:52:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 442. [2021-12-06 21:52:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (79), 73 states have call predecessors, (79), 73 states have call successors, (79) [2021-12-06 21:52:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 666 transitions. [2021-12-06 21:52:53,958 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 666 transitions. Word has length 114 [2021-12-06 21:52:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:53,958 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 666 transitions. [2021-12-06 21:52:53,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 666 transitions. [2021-12-06 21:52:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 21:52:53,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:53,961 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:53,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:52:53,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1193438081, now seen corresponding path program 2 times [2021-12-06 21:52:53,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:53,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728665995] [2021-12-06 21:52:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:53,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:52:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:52:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:52:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 21:52:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:52:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:52:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:52:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:52:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:52:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:52:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:52:54,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:54,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728665995] [2021-12-06 21:52:54,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728665995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:54,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:52:54,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:52:54,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944367523] [2021-12-06 21:52:54,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:54,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:52:54,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:52:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:52:54,061 INFO L87 Difference]: Start difference. First operand 442 states and 666 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:55,293 INFO L93 Difference]: Finished difference Result 1078 states and 1636 transitions. [2021-12-06 21:52:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:52:55,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-06 21:52:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:55,298 INFO L225 Difference]: With dead ends: 1078 [2021-12-06 21:52:55,298 INFO L226 Difference]: Without dead ends: 659 [2021-12-06 21:52:55,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:52:55,300 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1457 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:55,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 1854 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 21:52:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-06 21:52:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2021-12-06 21:52:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (81), 73 states have call predecessors, (81), 73 states have call successors, (81) [2021-12-06 21:52:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 669 transitions. [2021-12-06 21:52:55,325 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 669 transitions. Word has length 115 [2021-12-06 21:52:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:55,325 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 669 transitions. [2021-12-06 21:52:55,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 21:52:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 669 transitions. [2021-12-06 21:52:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 21:52:55,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:55,327 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:55,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:52:55,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1780926243, now seen corresponding path program 1 times [2021-12-06 21:52:55,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:55,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726378946] [2021-12-06 21:52:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:55,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:52:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:52:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:52:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:52:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:52:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:52:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:52:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:52:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:52:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:52:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:52:55,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726378946] [2021-12-06 21:52:55,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726378946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:55,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:52:55,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:52:55,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738873110] [2021-12-06 21:52:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:55,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:52:55,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:52:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:52:55,457 INFO L87 Difference]: Start difference. First operand 444 states and 669 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 21:52:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:56,928 INFO L93 Difference]: Finished difference Result 1076 states and 1631 transitions. [2021-12-06 21:52:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:52:56,929 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-12-06 21:52:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:56,932 INFO L225 Difference]: With dead ends: 1076 [2021-12-06 21:52:56,933 INFO L226 Difference]: Without dead ends: 659 [2021-12-06 21:52:56,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:52:56,935 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 1530 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 3992 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 4653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 3992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:56,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 2459 Invalid, 4653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 3992 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 21:52:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-06 21:52:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2021-12-06 21:52:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-06 21:52:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2021-12-06 21:52:56,958 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 116 [2021-12-06 21:52:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:56,958 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2021-12-06 21:52:56,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 21:52:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2021-12-06 21:52:56,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 21:52:56,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:56,960 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:56,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:52:56,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1953819643, now seen corresponding path program 2 times [2021-12-06 21:52:56,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:56,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322329917] [2021-12-06 21:52:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:56,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:52:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:52:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:52:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 21:52:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:52:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:52:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:52:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:52:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:52:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:52:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:52:57,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:57,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322329917] [2021-12-06 21:52:57,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322329917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:52:57,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:52:57,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:52:57,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678720988] [2021-12-06 21:52:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:52:57,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:52:57,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:52:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:52:57,065 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 21:52:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:52:58,590 INFO L93 Difference]: Finished difference Result 1078 states and 1637 transitions. [2021-12-06 21:52:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:52:58,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-12-06 21:52:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:52:58,595 INFO L225 Difference]: With dead ends: 1078 [2021-12-06 21:52:58,595 INFO L226 Difference]: Without dead ends: 661 [2021-12-06 21:52:58,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:52:58,598 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1623 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:52:58,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 2389 Invalid, 4505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 21:52:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-06 21:52:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 446. [2021-12-06 21:52:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 343 states have (on average 1.501457725947522) internal successors, (515), 350 states have internal predecessors, (515), 74 states have call successors, (74), 24 states have call predecessors, (74), 28 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2021-12-06 21:52:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 674 transitions. [2021-12-06 21:52:58,636 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 674 transitions. Word has length 117 [2021-12-06 21:52:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:52:58,637 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 674 transitions. [2021-12-06 21:52:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 21:52:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 674 transitions. [2021-12-06 21:52:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 21:52:58,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:52:58,640 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:52:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:52:58,640 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:52:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:52:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash -310085064, now seen corresponding path program 1 times [2021-12-06 21:52:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:52:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396060270] [2021-12-06 21:52:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:58,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:52:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:52:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:52:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:52:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:52:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:52:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:52:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:52:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:52:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:52:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:52:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:52:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:52:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:52:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 21:52:58,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:52:58,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396060270] [2021-12-06 21:52:58,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396060270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:52:58,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782862549] [2021-12-06 21:52:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:52:58,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:52:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:52:58,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:52:58,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:52:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:52:58,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:52:58,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:52:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:52:59,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:52:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:52:59,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782862549] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:52:59,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:52:59,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 21:52:59,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968581555] [2021-12-06 21:52:59,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:52:59,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 21:52:59,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:52:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 21:52:59,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:52:59,108 INFO L87 Difference]: Start difference. First operand 446 states and 674 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-06 21:53:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:01,345 INFO L93 Difference]: Finished difference Result 1807 states and 2945 transitions. [2021-12-06 21:53:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:53:01,345 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2021-12-06 21:53:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:01,353 INFO L225 Difference]: With dead ends: 1807 [2021-12-06 21:53:01,354 INFO L226 Difference]: Without dead ends: 1392 [2021-12-06 21:53:01,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 21:53:01,357 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 3823 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 5126 mSolverCounterSat, 1555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 6681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 5126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:01,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3825 Valid, 4000 Invalid, 6681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1555 Valid, 5126 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 21:53:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-06 21:53:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 799. [2021-12-06 21:53:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 632 states have (on average 1.5601265822784811) internal successors, (986), 639 states have internal predecessors, (986), 138 states have call successors, (138), 24 states have call predecessors, (138), 28 states have return successors, (159), 137 states have call predecessors, (159), 137 states have call successors, (159) [2021-12-06 21:53:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1283 transitions. [2021-12-06 21:53:01,409 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1283 transitions. Word has length 118 [2021-12-06 21:53:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:01,409 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1283 transitions. [2021-12-06 21:53:01,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-06 21:53:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1283 transitions. [2021-12-06 21:53:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 21:53:01,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:01,416 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:01,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:53:01,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:53:01,617 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:01,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:01,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1558417906, now seen corresponding path program 1 times [2021-12-06 21:53:01,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:01,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829142487] [2021-12-06 21:53:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:01,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:53:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:53:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:53:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:53:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:53:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:53:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:53:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:01,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:01,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829142487] [2021-12-06 21:53:01,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829142487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:01,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:01,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:01,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522424603] [2021-12-06 21:53:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:01,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:01,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:01,692 INFO L87 Difference]: Start difference. First operand 799 states and 1283 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:02,661 INFO L93 Difference]: Finished difference Result 2068 states and 3388 transitions. [2021-12-06 21:53:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2021-12-06 21:53:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:02,669 INFO L225 Difference]: With dead ends: 2068 [2021-12-06 21:53:02,669 INFO L226 Difference]: Without dead ends: 1347 [2021-12-06 21:53:02,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:02,672 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1446 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:02,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 1522 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:53:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-12-06 21:53:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1124. [2021-12-06 21:53:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 893 states have (on average 1.58006718924972) internal successors, (1411), 900 states have internal predecessors, (1411), 202 states have call successors, (202), 24 states have call predecessors, (202), 28 states have return successors, (233), 201 states have call predecessors, (233), 201 states have call successors, (233) [2021-12-06 21:53:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1846 transitions. [2021-12-06 21:53:02,744 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1846 transitions. Word has length 121 [2021-12-06 21:53:02,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:02,744 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1846 transitions. [2021-12-06 21:53:02,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1846 transitions. [2021-12-06 21:53:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 21:53:02,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:02,749 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:02,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:53:02,749 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash -783601292, now seen corresponding path program 1 times [2021-12-06 21:53:02,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:02,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023633985] [2021-12-06 21:53:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:02,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:53:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:53:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:53:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:53:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:53:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:53:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:53:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:02,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023633985] [2021-12-06 21:53:02,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023633985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:02,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:02,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:02,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78893356] [2021-12-06 21:53:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:02,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:02,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:02,838 INFO L87 Difference]: Start difference. First operand 1124 states and 1846 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:03,829 INFO L93 Difference]: Finished difference Result 2873 states and 4772 transitions. [2021-12-06 21:53:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2021-12-06 21:53:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:03,839 INFO L225 Difference]: With dead ends: 2873 [2021-12-06 21:53:03,839 INFO L226 Difference]: Without dead ends: 1880 [2021-12-06 21:53:03,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:03,842 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1419 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:03,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1510 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:53:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-12-06 21:53:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1657. [2021-12-06 21:53:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1331 states have (on average 1.59053343350864) internal successors, (2117), 1338 states have internal predecessors, (2117), 297 states have call successors, (297), 24 states have call predecessors, (297), 28 states have return successors, (328), 296 states have call predecessors, (328), 296 states have call successors, (328) [2021-12-06 21:53:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2742 transitions. [2021-12-06 21:53:03,941 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2742 transitions. Word has length 122 [2021-12-06 21:53:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:03,941 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 2742 transitions. [2021-12-06 21:53:03,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2742 transitions. [2021-12-06 21:53:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 21:53:03,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:03,948 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:03,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:53:03,949 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1220034332, now seen corresponding path program 1 times [2021-12-06 21:53:03,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:03,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897869626] [2021-12-06 21:53:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:03,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:53:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:53:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:53:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:53:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:53:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:53:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:53:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:04,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:04,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897869626] [2021-12-06 21:53:04,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897869626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:04,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:04,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:04,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39463571] [2021-12-06 21:53:04,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:04,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:04,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:04,033 INFO L87 Difference]: Start difference. First operand 1657 states and 2742 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:04,997 INFO L93 Difference]: Finished difference Result 4080 states and 6858 transitions. [2021-12-06 21:53:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:04,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2021-12-06 21:53:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:05,010 INFO L225 Difference]: With dead ends: 4080 [2021-12-06 21:53:05,010 INFO L226 Difference]: Without dead ends: 2689 [2021-12-06 21:53:05,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:05,014 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1428 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:05,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 1504 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:53:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-12-06 21:53:05,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2466. [2021-12-06 21:53:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2017 states have (on average 1.5984134853743184) internal successors, (3224), 2024 states have internal predecessors, (3224), 420 states have call successors, (420), 24 states have call predecessors, (420), 28 states have return successors, (467), 419 states have call predecessors, (467), 419 states have call successors, (467) [2021-12-06 21:53:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4111 transitions. [2021-12-06 21:53:05,170 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4111 transitions. Word has length 123 [2021-12-06 21:53:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:05,170 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4111 transitions. [2021-12-06 21:53:05,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4111 transitions. [2021-12-06 21:53:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 21:53:05,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:05,185 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:05,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:53:05,186 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash 776702101, now seen corresponding path program 1 times [2021-12-06 21:53:05,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:05,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233622799] [2021-12-06 21:53:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:05,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:53:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:53:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:53:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:53:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:53:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:53:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:53:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:05,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:05,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233622799] [2021-12-06 21:53:05,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233622799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:05,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:05,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:05,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117447149] [2021-12-06 21:53:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:05,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:05,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:05,276 INFO L87 Difference]: Start difference. First operand 2466 states and 4111 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:06,402 INFO L93 Difference]: Finished difference Result 5964 states and 10118 transitions. [2021-12-06 21:53:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:06,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-06 21:53:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:06,432 INFO L225 Difference]: With dead ends: 5964 [2021-12-06 21:53:06,432 INFO L226 Difference]: Without dead ends: 3983 [2021-12-06 21:53:06,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:06,440 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1408 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:06,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1506 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:53:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-12-06 21:53:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3760. [2021-12-06 21:53:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3132 states have (on average 1.603448275862069) internal successors, (5022), 3139 states have internal predecessors, (5022), 599 states have call successors, (599), 24 states have call predecessors, (599), 28 states have return successors, (672), 598 states have call predecessors, (672), 598 states have call successors, (672) [2021-12-06 21:53:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 6293 transitions. [2021-12-06 21:53:06,691 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 6293 transitions. Word has length 124 [2021-12-06 21:53:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:06,691 INFO L470 AbstractCegarLoop]: Abstraction has 3760 states and 6293 transitions. [2021-12-06 21:53:06,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 6293 transitions. [2021-12-06 21:53:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 21:53:06,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:06,700 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:06,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:53:06,700 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1859394648, now seen corresponding path program 1 times [2021-12-06 21:53:06,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:06,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159328797] [2021-12-06 21:53:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:06,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:53:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:53:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:53:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:53:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:53:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:53:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:53:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:06,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:06,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159328797] [2021-12-06 21:53:06,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159328797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:06,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:06,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:06,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296953214] [2021-12-06 21:53:06,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:06,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:06,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:06,789 INFO L87 Difference]: Start difference. First operand 3760 states and 6293 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:07,990 INFO L93 Difference]: Finished difference Result 9067 states and 15482 transitions. [2021-12-06 21:53:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-06 21:53:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:08,021 INFO L225 Difference]: With dead ends: 9067 [2021-12-06 21:53:08,022 INFO L226 Difference]: Without dead ends: 6124 [2021-12-06 21:53:08,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:08,031 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1407 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:08,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 1547 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:53:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-12-06 21:53:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 5901. [2021-12-06 21:53:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 4897 states have (on average 1.5985297120686135) internal successors, (7828), 4904 states have internal predecessors, (7828), 975 states have call successors, (975), 24 states have call predecessors, (975), 28 states have return successors, (1092), 974 states have call predecessors, (1092), 974 states have call successors, (1092) [2021-12-06 21:53:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 9895 transitions. [2021-12-06 21:53:08,336 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 9895 transitions. Word has length 125 [2021-12-06 21:53:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:08,336 INFO L470 AbstractCegarLoop]: Abstraction has 5901 states and 9895 transitions. [2021-12-06 21:53:08,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 9895 transitions. [2021-12-06 21:53:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 21:53:08,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:08,348 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:08,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:53:08,348 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash 433004377, now seen corresponding path program 1 times [2021-12-06 21:53:08,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:08,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172228020] [2021-12-06 21:53:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:08,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:53:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:53:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:53:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:53:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:53:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:53:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:53:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:08,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172228020] [2021-12-06 21:53:08,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172228020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:08,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053052764] [2021-12-06 21:53:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:08,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:08,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:08,447 INFO L87 Difference]: Start difference. First operand 5901 states and 9895 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:09,725 INFO L93 Difference]: Finished difference Result 14684 states and 25095 transitions. [2021-12-06 21:53:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:09,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-12-06 21:53:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:09,759 INFO L225 Difference]: With dead ends: 14684 [2021-12-06 21:53:09,759 INFO L226 Difference]: Without dead ends: 10002 [2021-12-06 21:53:09,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:09,771 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1573 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:09,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 1484 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:53:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2021-12-06 21:53:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 9779. [2021-12-06 21:53:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9779 states, 8169 states have (on average 1.5971355123026074) internal successors, (13047), 8176 states have internal predecessors, (13047), 1581 states have call successors, (1581), 24 states have call predecessors, (1581), 28 states have return successors, (1776), 1580 states have call predecessors, (1776), 1580 states have call successors, (1776) [2021-12-06 21:53:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16404 transitions. [2021-12-06 21:53:10,305 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 16404 transitions. Word has length 126 [2021-12-06 21:53:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:10,306 INFO L470 AbstractCegarLoop]: Abstraction has 9779 states and 16404 transitions. [2021-12-06 21:53:10,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 16404 transitions. [2021-12-06 21:53:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:53:10,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:10,321 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:10,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:53:10,321 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1929234490, now seen corresponding path program 1 times [2021-12-06 21:53:10,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:10,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952333621] [2021-12-06 21:53:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:10,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:53:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:53:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:53:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:53:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:53:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:53:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:53:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:10,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952333621] [2021-12-06 21:53:10,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952333621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:10,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:10,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:10,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723512527] [2021-12-06 21:53:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:10,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:10,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:10,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:10,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:10,392 INFO L87 Difference]: Start difference. First operand 9779 states and 16404 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:12,072 INFO L93 Difference]: Finished difference Result 25393 states and 43376 transitions. [2021-12-06 21:53:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:12,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-12-06 21:53:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:12,114 INFO L225 Difference]: With dead ends: 25393 [2021-12-06 21:53:12,114 INFO L226 Difference]: Without dead ends: 17315 [2021-12-06 21:53:12,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:12,133 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1426 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:12,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 1563 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:53:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17315 states. [2021-12-06 21:53:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17315 to 17092. [2021-12-06 21:53:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17092 states, 14279 states have (on average 1.5892569507668604) internal successors, (22693), 14286 states have internal predecessors, (22693), 2784 states have call successors, (2784), 24 states have call predecessors, (2784), 28 states have return successors, (3123), 2783 states have call predecessors, (3123), 2783 states have call successors, (3123) [2021-12-06 21:53:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 28600 transitions. [2021-12-06 21:53:13,068 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 28600 transitions. Word has length 127 [2021-12-06 21:53:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:13,068 INFO L470 AbstractCegarLoop]: Abstraction has 17092 states and 28600 transitions. [2021-12-06 21:53:13,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 28600 transitions. [2021-12-06 21:53:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:53:13,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:13,088 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:13,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:53:13,088 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash -709818470, now seen corresponding path program 1 times [2021-12-06 21:53:13,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:13,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280244645] [2021-12-06 21:53:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:13,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:53:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:53:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:53:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:53:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:53:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:53:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:53:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:13,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:13,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280244645] [2021-12-06 21:53:13,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280244645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:13,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:13,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:13,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621739430] [2021-12-06 21:53:13,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:13,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:13,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:13,158 INFO L87 Difference]: Start difference. First operand 17092 states and 28600 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:15,376 INFO L93 Difference]: Finished difference Result 45369 states and 77389 transitions. [2021-12-06 21:53:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:15,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-12-06 21:53:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:15,468 INFO L225 Difference]: With dead ends: 45369 [2021-12-06 21:53:15,468 INFO L226 Difference]: Without dead ends: 30655 [2021-12-06 21:53:15,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:15,499 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1436 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:15,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1505 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:53:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30655 states. [2021-12-06 21:53:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30655 to 30432. [2021-12-06 21:53:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30432 states, 25580 states have (on average 1.585457388584832) internal successors, (40556), 25587 states have internal predecessors, (40556), 4823 states have call successors, (4823), 24 states have call predecessors, (4823), 28 states have return successors, (5436), 4822 states have call predecessors, (5436), 4822 states have call successors, (5436) [2021-12-06 21:53:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30432 states to 30432 states and 50815 transitions. [2021-12-06 21:53:17,124 INFO L78 Accepts]: Start accepts. Automaton has 30432 states and 50815 transitions. Word has length 128 [2021-12-06 21:53:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:17,124 INFO L470 AbstractCegarLoop]: Abstraction has 30432 states and 50815 transitions. [2021-12-06 21:53:17,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30432 states and 50815 transitions. [2021-12-06 21:53:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 21:53:17,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:17,144 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:17,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:53:17,144 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1274785960, now seen corresponding path program 1 times [2021-12-06 21:53:17,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:17,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984521642] [2021-12-06 21:53:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:17,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:53:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:53:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:53:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:53:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:53:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:53:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:53:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:17,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:17,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984521642] [2021-12-06 21:53:17,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984521642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:17,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:17,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:17,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504819857] [2021-12-06 21:53:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:17,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:17,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:17,216 INFO L87 Difference]: Start difference. First operand 30432 states and 50815 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:20,672 INFO L93 Difference]: Finished difference Result 83106 states and 140913 transitions. [2021-12-06 21:53:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:20,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-06 21:53:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:20,830 INFO L225 Difference]: With dead ends: 83106 [2021-12-06 21:53:20,831 INFO L226 Difference]: Without dead ends: 55864 [2021-12-06 21:53:20,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:20,881 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 1499 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:20,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1469 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:53:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55864 states. [2021-12-06 21:53:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55864 to 55641. [2021-12-06 21:53:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55641 states, 47074 states have (on average 1.5802141309427709) internal successors, (74387), 47081 states have internal predecessors, (74387), 8538 states have call successors, (8538), 24 states have call predecessors, (8538), 28 states have return successors, (9683), 8537 states have call predecessors, (9683), 8537 states have call successors, (9683) [2021-12-06 21:53:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55641 states to 55641 states and 92608 transitions. [2021-12-06 21:53:23,692 INFO L78 Accepts]: Start accepts. Automaton has 55641 states and 92608 transitions. Word has length 129 [2021-12-06 21:53:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:23,692 INFO L470 AbstractCegarLoop]: Abstraction has 55641 states and 92608 transitions. [2021-12-06 21:53:23,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 55641 states and 92608 transitions. [2021-12-06 21:53:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 21:53:23,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:23,715 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:23,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:53:23,716 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash -543713350, now seen corresponding path program 1 times [2021-12-06 21:53:23,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:23,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370130328] [2021-12-06 21:53:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:23,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:53:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:53:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:53:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:53:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:53:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:53:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:53:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:23,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:23,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370130328] [2021-12-06 21:53:23,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370130328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:23,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:23,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:53:23,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788717625] [2021-12-06 21:53:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:23,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:53:23,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:53:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:53:23,786 INFO L87 Difference]: Start difference. First operand 55641 states and 92608 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:29,063 INFO L93 Difference]: Finished difference Result 104162 states and 176899 transitions. [2021-12-06 21:53:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:53:29,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-12-06 21:53:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:29,367 INFO L225 Difference]: With dead ends: 104162 [2021-12-06 21:53:29,367 INFO L226 Difference]: Without dead ends: 103938 [2021-12-06 21:53:29,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 21:53:29,405 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1399 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:29,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 1519 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:53:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103938 states. [2021-12-06 21:53:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103938 to 103715. [2021-12-06 21:53:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103715 states, 88349 states have (on average 1.573509603957034) internal successors, (139018), 88356 states have internal predecessors, (139018), 15337 states have call successors, (15337), 24 states have call predecessors, (15337), 28 states have return successors, (17528), 15336 states have call predecessors, (17528), 15336 states have call successors, (17528) [2021-12-06 21:53:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103715 states to 103715 states and 171883 transitions. [2021-12-06 21:53:35,121 INFO L78 Accepts]: Start accepts. Automaton has 103715 states and 171883 transitions. Word has length 130 [2021-12-06 21:53:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:53:35,122 INFO L470 AbstractCegarLoop]: Abstraction has 103715 states and 171883 transitions. [2021-12-06 21:53:35,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:53:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 103715 states and 171883 transitions. [2021-12-06 21:53:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 21:53:35,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:53:35,149 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:53:35,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:53:35,150 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:53:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:53:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash -808213529, now seen corresponding path program 1 times [2021-12-06 21:53:35,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:53:35,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634578130] [2021-12-06 21:53:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:53:35,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:53:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:53:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:53:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:53:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:53:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:53:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:53:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:53:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:53:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:53:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:53:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:53:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:53:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 21:53:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:53:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:53:35,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:53:35,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634578130] [2021-12-06 21:53:35,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634578130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:53:35,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:53:35,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 21:53:35,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416215530] [2021-12-06 21:53:35,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:53:35,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 21:53:35,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:53:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 21:53:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:53:35,306 INFO L87 Difference]: Start difference. First operand 103715 states and 171883 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-06 21:53:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:53:49,349 INFO L93 Difference]: Finished difference Result 207840 states and 356289 transitions. [2021-12-06 21:53:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 21:53:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2021-12-06 21:53:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:53:50,132 INFO L225 Difference]: With dead ends: 207840 [2021-12-06 21:53:50,132 INFO L226 Difference]: Without dead ends: 207622 [2021-12-06 21:53:50,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 21:53:50,200 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 5489 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 12505 mSolverCounterSat, 3616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5489 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 16121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3616 IncrementalHoareTripleChecker+Valid, 12505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:53:50,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5489 Valid, 4325 Invalid, 16121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3616 Valid, 12505 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 21:53:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207622 states. [2021-12-06 21:54:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207622 to 206742. [2021-12-06 21:54:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206742 states, 176143 states have (on average 1.5741017241672959) internal successors, (277267), 176050 states have internal predecessors, (277267), 30523 states have call successors, (30523), 65 states have call predecessors, (30523), 75 states have return successors, (38194), 30634 states have call predecessors, (38194), 30520 states have call successors, (38194) [2021-12-06 21:54:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206742 states to 206742 states and 345984 transitions. [2021-12-06 21:54:01,507 INFO L78 Accepts]: Start accepts. Automaton has 206742 states and 345984 transitions. Word has length 131 [2021-12-06 21:54:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:54:01,508 INFO L470 AbstractCegarLoop]: Abstraction has 206742 states and 345984 transitions. [2021-12-06 21:54:01,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-06 21:54:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 206742 states and 345984 transitions. [2021-12-06 21:54:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:54:01,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:54:01,559 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:54:01,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:54:01,559 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:54:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 387858403, now seen corresponding path program 1 times [2021-12-06 21:54:01,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:01,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033323740] [2021-12-06 21:54:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:01,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:54:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:54:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:54:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:54:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:54:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:54:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:54:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:54:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:54:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:54:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:54:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:54:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:54:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:54:01,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:01,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033323740] [2021-12-06 21:54:01,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033323740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:54:01,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:54:01,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 21:54:01,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831521365] [2021-12-06 21:54:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:54:01,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:54:01,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:54:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:54:01,678 INFO L87 Difference]: Start difference. First operand 206742 states and 345984 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 21:54:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:13,247 INFO L93 Difference]: Finished difference Result 209450 states and 356606 transitions. [2021-12-06 21:54:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:54:13,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 132 [2021-12-06 21:54:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:54:13,926 INFO L225 Difference]: With dead ends: 209450 [2021-12-06 21:54:13,926 INFO L226 Difference]: Without dead ends: 207582 [2021-12-06 21:54:13,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 21:54:14,000 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 3279 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 4729 mSolverCounterSat, 1586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1586 IncrementalHoareTripleChecker+Valid, 4729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:54:14,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3294 Valid, 2869 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1586 Valid, 4729 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 21:54:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207582 states. [2021-12-06 21:54:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207582 to 206833. [2021-12-06 21:54:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206833 states, 176209 states have (on average 1.574039918505865) internal successors, (277360), 176121 states have internal predecessors, (277360), 30545 states have call successors, (30545), 68 states have call predecessors, (30545), 78 states have return successors, (38226), 30654 states have call predecessors, (38226), 30542 states have call successors, (38226) [2021-12-06 21:54:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206833 states to 206833 states and 346131 transitions. [2021-12-06 21:54:26,131 INFO L78 Accepts]: Start accepts. Automaton has 206833 states and 346131 transitions. Word has length 132 [2021-12-06 21:54:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:54:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 206833 states and 346131 transitions. [2021-12-06 21:54:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 21:54:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 206833 states and 346131 transitions. [2021-12-06 21:54:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:54:26,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:54:26,180 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:54:26,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:54:26,180 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:54:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:54:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1070746074, now seen corresponding path program 1 times [2021-12-06 21:54:26,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:54:26,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044263762] [2021-12-06 21:54:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:54:26,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:54:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:54:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:54:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:54:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:54:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:54:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:54:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:54:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:54:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:54:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:54:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:54:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:54:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:54:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:54:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:54:26,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:54:26,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044263762] [2021-12-06 21:54:26,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044263762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:54:26,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:54:26,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:54:26,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838122488] [2021-12-06 21:54:26,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:54:26,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:54:26,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:54:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:54:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:54:26,263 INFO L87 Difference]: Start difference. First operand 206833 states and 346131 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:54:42,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:54:42,872 INFO L93 Difference]: Finished difference Result 313319 states and 542763 transitions. [2021-12-06 21:54:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:54:42,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-06 21:54:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:54:43,921 INFO L225 Difference]: With dead ends: 313319 [2021-12-06 21:54:43,921 INFO L226 Difference]: Without dead ends: 312685 [2021-12-06 21:54:44,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2021-12-06 21:54:44,022 INFO L933 BasicCegarLoop]: 1250 mSDtfsCounter, 3811 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 4371 mSolverCounterSat, 1885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3821 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 6256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1885 IncrementalHoareTripleChecker+Valid, 4371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:54:44,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3821 Valid, 2631 Invalid, 6256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1885 Valid, 4371 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 21:54:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312685 states. [2021-12-06 21:55:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312685 to 310769. [2021-12-06 21:55:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310769 states, 264676 states have (on average 1.5737921080868684) internal successors, (416545), 264511 states have internal predecessors, (416545), 45906 states have call successors, (45906), 157 states have call predecessors, (45906), 186 states have return successors, (64475), 46130 states have call predecessors, (64475), 45898 states have call successors, (64475) [2021-12-06 21:55:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310769 states to 310769 states and 526926 transitions. [2021-12-06 21:55:03,627 INFO L78 Accepts]: Start accepts. Automaton has 310769 states and 526926 transitions. Word has length 132 [2021-12-06 21:55:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:55:03,628 INFO L470 AbstractCegarLoop]: Abstraction has 310769 states and 526926 transitions. [2021-12-06 21:55:03,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:55:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 310769 states and 526926 transitions. [2021-12-06 21:55:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:55:03,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:55:03,706 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 21:55:03,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:55:03,706 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:55:03,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:55:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1979456741, now seen corresponding path program 1 times [2021-12-06 21:55:03,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:55:03,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393923505] [2021-12-06 21:55:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:55:03,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:55:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:55:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:55:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:55:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:55:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:55:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:55:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:55:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:55:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:55:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:55:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:55:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:55:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:55:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:55:03,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:55:03,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393923505] [2021-12-06 21:55:03,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393923505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:55:03,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:55:03,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:55:03,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572709940] [2021-12-06 21:55:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:55:03,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:55:03,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:55:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:55:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:55:03,787 INFO L87 Difference]: Start difference. First operand 310769 states and 526926 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:55:19,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:55:19,246 INFO L93 Difference]: Finished difference Result 315166 states and 543168 transitions. [2021-12-06 21:55:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:55:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-06 21:55:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:55:20,518 INFO L225 Difference]: With dead ends: 315166 [2021-12-06 21:55:20,518 INFO L226 Difference]: Without dead ends: 312906 [2021-12-06 21:55:20,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:55:20,623 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1895 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:55:20,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 1348 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:55:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312906 states. [2021-12-06 21:55:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312906 to 310802. [2021-12-06 21:55:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310802 states, 264716 states have (on average 1.5737809577056165) internal successors, (416605), 264552 states have internal predecessors, (416605), 45861 states have call successors, (45861), 193 states have call predecessors, (45861), 224 states have return successors, (64407), 46084 states have call predecessors, (64407), 45854 states have call successors, (64407) [2021-12-06 21:55:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310802 states to 310802 states and 526873 transitions. [2021-12-06 21:55:40,598 INFO L78 Accepts]: Start accepts. Automaton has 310802 states and 526873 transitions. Word has length 132 [2021-12-06 21:55:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:55:40,599 INFO L470 AbstractCegarLoop]: Abstraction has 310802 states and 526873 transitions. [2021-12-06 21:55:40,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 21:55:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 310802 states and 526873 transitions. [2021-12-06 21:55:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 21:55:41,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:55:41,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:41,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 21:55:41,789 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:55:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:55:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1860267196, now seen corresponding path program 1 times [2021-12-06 21:55:41,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:55:41,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745951798] [2021-12-06 21:55:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:55:41,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:55:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:55:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:55:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:55:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:55:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:55:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:55:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:55:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:55:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:55:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:55:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:55:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:55:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 21:55:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:55:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 21:55:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:55:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:55:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 21:55:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:55:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 21:55:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 21:55:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 21:55:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 21:55:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 21:55:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:55:41,944 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 21:55:41,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:55:41,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745951798] [2021-12-06 21:55:41,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745951798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:55:41,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:55:41,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:55:41,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117316224] [2021-12-06 21:55:41,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:55:41,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:55:41,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:55:41,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:55:41,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:55:41,945 INFO L87 Difference]: Start difference. First operand 310802 states and 526873 transitions. Second operand has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 21:55:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:55:58,351 INFO L93 Difference]: Finished difference Result 314192 states and 541731 transitions. [2021-12-06 21:55:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:55:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2021-12-06 21:55:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:55:59,474 INFO L225 Difference]: With dead ends: 314192 [2021-12-06 21:55:59,474 INFO L226 Difference]: Without dead ends: 312915 [2021-12-06 21:55:59,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-12-06 21:55:59,563 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1167 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:55:59,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 2180 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 21:55:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312915 states. [2021-12-06 21:56:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312915 to 310802. [2021-12-06 21:56:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310802 states, 264716 states have (on average 1.5737696248054518) internal successors, (416602), 264552 states have internal predecessors, (416602), 45861 states have call successors, (45861), 193 states have call predecessors, (45861), 224 states have return successors, (64407), 46084 states have call predecessors, (64407), 45854 states have call successors, (64407) [2021-12-06 21:56:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310802 states to 310802 states and 526870 transitions. [2021-12-06 21:56:19,229 INFO L78 Accepts]: Start accepts. Automaton has 310802 states and 526870 transitions. Word has length 226 [2021-12-06 21:56:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:56:19,229 INFO L470 AbstractCegarLoop]: Abstraction has 310802 states and 526870 transitions. [2021-12-06 21:56:19,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 21:56:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 310802 states and 526870 transitions. [2021-12-06 21:56:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 21:56:20,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:56:20,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:20,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 21:56:20,366 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:56:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:56:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2016247738, now seen corresponding path program 1 times [2021-12-06 21:56:20,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:56:20,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888270353] [2021-12-06 21:56:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:56:20,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:56:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:56:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:56:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:56:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:56:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:56:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:56:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:56:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:56:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:56:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 21:56:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:56:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:56:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 21:56:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:56:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 21:56:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:56:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:56:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 21:56:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:56:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 21:56:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 21:56:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 21:56:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 21:56:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 21:56:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 21:56:20,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:56:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888270353] [2021-12-06 21:56:20,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888270353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:56:20,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:56:20,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:56:20,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830152307] [2021-12-06 21:56:20,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:56:20,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:56:20,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:56:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:56:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:56:20,690 INFO L87 Difference]: Start difference. First operand 310802 states and 526870 transitions. Second operand has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 21:56:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:56:37,213 INFO L93 Difference]: Finished difference Result 313331 states and 540411 transitions. [2021-12-06 21:56:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 21:56:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2021-12-06 21:56:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:56:38,233 INFO L225 Difference]: With dead ends: 313331 [2021-12-06 21:56:38,233 INFO L226 Difference]: Without dead ends: 312051 [2021-12-06 21:56:38,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-12-06 21:56:38,324 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1339 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:56:38,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 2062 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:56:38,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312051 states. [2021-12-06 21:56:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312051 to 309602. [2021-12-06 21:56:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309602 states, 263829 states have (on average 1.574436472108828) internal successors, (415382), 263639 states have internal predecessors, (415382), 45619 states have call successors, (45619), 139 states have call predecessors, (45619), 153 states have return successors, (64102), 45836 states have call predecessors, (64102), 45614 states have call successors, (64102) [2021-12-06 21:56:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309602 states to 309602 states and 525103 transitions. [2021-12-06 21:56:57,592 INFO L78 Accepts]: Start accepts. Automaton has 309602 states and 525103 transitions. Word has length 226 [2021-12-06 21:56:57,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:56:57,592 INFO L470 AbstractCegarLoop]: Abstraction has 309602 states and 525103 transitions. [2021-12-06 21:56:57,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 21:56:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 309602 states and 525103 transitions. [2021-12-06 21:56:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 21:56:58,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:56:58,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:58,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:56:58,601 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:56:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:56:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1782459419, now seen corresponding path program 1 times [2021-12-06 21:56:58,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:56:58,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404750866] [2021-12-06 21:56:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:56:58,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:56:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:56:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:56:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:56:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:56:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:56:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:56:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:56:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:56:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:56:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:56:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:56:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:56:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 21:56:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 21:56:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 21:56:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:56:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:56:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 21:56:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:56:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 21:56:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 21:56:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 21:56:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 21:56:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 21:56:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 21:56:59,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:56:59,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404750866] [2021-12-06 21:56:59,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404750866] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:56:59,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191169559] [2021-12-06 21:56:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:56:59,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:56:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:56:59,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:56:59,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:56:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:56:59,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 21:56:59,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:56:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-06 21:56:59,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:57:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 21:57:00,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191169559] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:57:00,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:57:00,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9, 10] total 38 [2021-12-06 21:57:00,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316950774] [2021-12-06 21:57:00,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:57:00,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 21:57:00,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:57:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 21:57:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 21:57:00,409 INFO L87 Difference]: Start difference. First operand 309602 states and 525103 transitions. Second operand has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) [2021-12-06 21:58:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:25,051 INFO L93 Difference]: Finished difference Result 940144 states and 1646206 transitions. [2021-12-06 21:58:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2021-12-06 21:58:25,052 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) Word has length 227 [2021-12-06 21:58:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:29,110 INFO L225 Difference]: With dead ends: 940144 [2021-12-06 21:58:29,110 INFO L226 Difference]: Without dead ends: 932877 [2021-12-06 21:58:29,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24354 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5946, Invalid=58316, Unknown=0, NotChecked=0, Total=64262 [2021-12-06 21:58:29,474 INFO L933 BasicCegarLoop]: 2073 mSDtfsCounter, 17369 mSDsluCounter, 10411 mSDsCounter, 0 mSdLazyCounter, 84406 mSolverCounterSat, 17081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17369 SdHoareTripleChecker+Valid, 12484 SdHoareTripleChecker+Invalid, 101487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17081 IncrementalHoareTripleChecker+Valid, 84406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:29,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17369 Valid, 12484 Invalid, 101487 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17081 Valid, 84406 Invalid, 0 Unknown, 0 Unchecked, 29.0s Time] [2021-12-06 21:58:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932877 states. [2021-12-06 21:59:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932877 to 920666. [2021-12-06 21:59:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920666 states, 784645 states have (on average 1.574891830063277) internal successors, (1235731), 783801 states have internal predecessors, (1235731), 135555 states have call successors, (135555), 391 states have call predecessors, (135555), 465 states have return successors, (212946), 136508 states have call predecessors, (212946), 135541 states have call successors, (212946) [2021-12-06 21:59:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920666 states to 920666 states and 1584232 transitions. [2021-12-06 21:59:35,990 INFO L78 Accepts]: Start accepts. Automaton has 920666 states and 1584232 transitions. Word has length 227 [2021-12-06 21:59:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:35,990 INFO L470 AbstractCegarLoop]: Abstraction has 920666 states and 1584232 transitions. [2021-12-06 21:59:35,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) [2021-12-06 21:59:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 920666 states and 1584232 transitions. [2021-12-06 21:59:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-06 21:59:40,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:40,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:40,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 21:59:40,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:59:40,393 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash -526308967, now seen corresponding path program 1 times [2021-12-06 21:59:40,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:40,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554946243] [2021-12-06 21:59:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:40,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:59:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:59:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:59:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 21:59:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:59:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:59:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:59:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:59:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 21:59:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 21:59:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 21:59:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 21:59:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:59:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:59:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 21:59:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 21:59:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 21:59:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 21:59:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-06 21:59:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-06 21:59:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 21:59:40,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:40,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554946243] [2021-12-06 21:59:40,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554946243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:59:40,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805611522] [2021-12-06 21:59:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:40,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:59:40,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:59:40,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:59:40,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 21:59:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:40,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:59:40,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:59:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 21:59:40,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:59:40,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805611522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:40,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:59:40,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-06 21:59:40,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078063351] [2021-12-06 21:59:40,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:40,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:59:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:59:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:59:40,905 INFO L87 Difference]: Start difference. First operand 920666 states and 1584232 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:00:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:32,551 INFO L93 Difference]: Finished difference Result 1531701 states and 2645386 transitions. [2021-12-06 22:00:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:00:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 229 [2021-12-06 22:00:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:36,615 INFO L225 Difference]: With dead ends: 1531701 [2021-12-06 22:00:36,615 INFO L226 Difference]: Without dead ends: 920702 [2021-12-06 22:00:38,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:00:38,108 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 131 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:38,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 2049 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:00:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920702 states. [2021-12-06 22:01:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920702 to 920666. [2021-12-06 22:01:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920666 states, 784645 states have (on average 1.5748892811398785) internal successors, (1235729), 783801 states have internal predecessors, (1235729), 135555 states have call successors, (135555), 391 states have call predecessors, (135555), 465 states have return successors, (212946), 136508 states have call predecessors, (212946), 135541 states have call successors, (212946) [2021-12-06 22:01:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920666 states to 920666 states and 1584230 transitions. [2021-12-06 22:01:47,016 INFO L78 Accepts]: Start accepts. Automaton has 920666 states and 1584230 transitions. Word has length 229 [2021-12-06 22:01:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:01:47,016 INFO L470 AbstractCegarLoop]: Abstraction has 920666 states and 1584230 transitions. [2021-12-06 22:01:47,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:01:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 920666 states and 1584230 transitions. [2021-12-06 22:01:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-06 22:01:50,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:01:50,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:50,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:01:51,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 22:01:51,135 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:01:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:01:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2115550757, now seen corresponding path program 1 times [2021-12-06 22:01:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:01:51,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671957578] [2021-12-06 22:01:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:51,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:01:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:01:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:01:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:01:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:01:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:01:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:01:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:01:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:01:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:01:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:01:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:01:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 22:01:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:01:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 22:01:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:01:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:01:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:01:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:01:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:01:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 22:01:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 22:01:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:01:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 22:01:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:01:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 22:01:51,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:01:51,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671957578] [2021-12-06 22:01:51,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671957578] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:01:51,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178784003] [2021-12-06 22:01:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:51,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:01:51,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:01:51,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:01:51,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6cb14ad-e2e8-4e6c-82c5-e7a7d16bbfdc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:01:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:01:51,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:01:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 22:01:51,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:01:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:01:52,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178784003] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:01:52,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:01:52,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2021-12-06 22:01:52,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141854066] [2021-12-06 22:01:52,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:01:52,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 22:01:52,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:01:52,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 22:01:52,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:01:52,433 INFO L87 Difference]: Start difference. First operand 920666 states and 1584230 transitions. Second operand has 28 states, 25 states have (on average 13.32) internal successors, (333), 23 states have internal predecessors, (333), 12 states have call successors, (67), 8 states have call predecessors, (67), 11 states have return successors, (65), 12 states have call predecessors, (65), 12 states have call successors, (65)