./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product12.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_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/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_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/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_29cda54f-17bf-42bb-8b73-205929091dc2/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 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:58:08,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:58:08,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:58:08,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:58:08,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:58:08,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:58:08,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:58:08,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:58:08,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:58:08,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:58:08,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:58:08,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:58:08,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:58:08,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:58:08,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:58:08,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:58:08,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:58:08,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:58:08,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:58:08,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:58:08,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:58:08,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:58:08,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:58:08,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:58:08,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:58:08,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:58:08,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:58:08,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:58:08,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:58:08,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:58:08,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:58:08,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:58:08,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:58:08,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:58:08,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:58:08,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:58:08,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:58:08,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:58:08,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:58:08,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:58:08,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:58:08,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:58:08,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:58:08,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:58:08,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:58:08,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:58:08,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:58:08,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:58:08,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:58:08,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:58:08,958 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:58:08,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:58:08,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:58:08,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:58:08,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:58:08,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:58:08,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:58:08,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:58:08,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:58:08,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:58:08,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:58:08,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:58:08,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:58:08,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:58:08,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:58:08,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:58:08,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:58:08,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:58:08,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:58:08,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:58:08,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:58:08,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:58:08,963 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:58:08,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:58:08,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:58:08,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:58:08,963 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_29cda54f-17bf-42bb-8b73-205929091dc2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 [2021-12-06 21:58:09,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:58:09,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:58:09,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:58:09,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:58:09,176 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:58:09,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2021-12-06 21:58:09,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/data/20b57fe01/17bbcd1a3e114f489c78abd7a107180c/FLAGfe50b49d9 [2021-12-06 21:58:09,649 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:58:09,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2021-12-06 21:58:09,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/data/20b57fe01/17bbcd1a3e114f489c78abd7a107180c/FLAGfe50b49d9 [2021-12-06 21:58:09,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/data/20b57fe01/17bbcd1a3e114f489c78abd7a107180c [2021-12-06 21:58:09,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:58:09,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:58:09,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:58:09,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:58:09,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:58:09,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:58:09" (1/1) ... [2021-12-06 21:58:09,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e9f208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:09, skipping insertion in model container [2021-12-06 21:58:09,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:58:09" (1/1) ... [2021-12-06 21:58:09,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:58:09,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:58:10,113 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_29cda54f-17bf-42bb-8b73-205929091dc2/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2021-12-06 21:58:10,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:58:10,141 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:58:10,196 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_29cda54f-17bf-42bb-8b73-205929091dc2/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2021-12-06 21:58:10,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:58:10,227 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:58:10,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10 WrapperNode [2021-12-06 21:58:10,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:58:10,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:58:10,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:58:10,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:58:10,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,290 INFO L137 Inliner]: procedures = 123, calls = 193, calls flagged for inlining = 49, calls inlined = 39, statements flattened = 807 [2021-12-06 21:58:10,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:58:10,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:58:10,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:58:10,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:58:10,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:58:10,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:58:10,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:58:10,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:58:10,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (1/1) ... [2021-12-06 21:58:10,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:58:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:10,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:58:10,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:58:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 21:58:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 21:58:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 21:58:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 21:58:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 21:58:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 21:58:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 21:58:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 21:58:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 21:58:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 21:58:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 21:58:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 21:58:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:58:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 21:58:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 21:58:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 21:58:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 21:58:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 21:58:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 21:58:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 21:58:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 21:58:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:58:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 21:58:10,403 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 21:58:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:58:10,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:58:10,538 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:58:10,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:58:10,960 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:58:10,970 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:58:10,970 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:58:10,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:58:10 BoogieIcfgContainer [2021-12-06 21:58:10,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:58:10,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:58:10,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:58:10,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:58:10,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:58:09" (1/3) ... [2021-12-06 21:58:10,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e332ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:58:10, skipping insertion in model container [2021-12-06 21:58:10,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:58:10" (2/3) ... [2021-12-06 21:58:10,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e332ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:58:10, skipping insertion in model container [2021-12-06 21:58:10,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:58:10" (3/3) ... [2021-12-06 21:58:10,980 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2021-12-06 21:58:10,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:58:10,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:58:11,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:58:11,025 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 21:58:11,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:58:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 212 states have (on average 1.5377358490566038) internal successors, (326), 216 states have internal predecessors, (326), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-06 21:58:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 21:58:11,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:11,057 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 21:58:11,057 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash 950381241, now seen corresponding path program 1 times [2021-12-06 21:58:11,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:11,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981130091] [2021-12-06 21:58:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:11,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:58:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:58:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:58:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:58:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 21:58:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:58:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:58:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:58:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:58:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:58:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:58:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 21:58:11,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:11,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981130091] [2021-12-06 21:58:11,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981130091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:11,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788447619] [2021-12-06 21:58:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:11,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:11,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:11,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:58:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:11,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 21:58:11,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:58:11,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:58:11,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788447619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:11,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:58:11,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-06 21:58:11,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140527327] [2021-12-06 21:58:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:11,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:58:11,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:58:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:58:11,760 INFO L87 Difference]: Start difference. First operand has 274 states, 212 states have (on average 1.5377358490566038) internal successors, (326), 216 states have internal predecessors, (326), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:11,801 INFO L93 Difference]: Finished difference Result 399 states and 586 transitions. [2021-12-06 21:58:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:58:11,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2021-12-06 21:58:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:11,814 INFO L225 Difference]: With dead ends: 399 [2021-12-06 21:58:11,814 INFO L226 Difference]: Without dead ends: 267 [2021-12-06 21:58:11,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:58:11,821 INFO L933 BasicCegarLoop]: 408 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, 408 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 21:58:11,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:58:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-06 21:58:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-06 21:58:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 206 states have (on average 1.529126213592233) internal successors, (315), 209 states have internal predecessors, (315), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-06 21:58:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 400 transitions. [2021-12-06 21:58:11,872 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 400 transitions. Word has length 111 [2021-12-06 21:58:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:11,873 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 400 transitions. [2021-12-06 21:58:11,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 400 transitions. [2021-12-06 21:58:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 21:58:11,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:11,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 21:58:11,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:58:12,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 21:58:12,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash -347138604, now seen corresponding path program 1 times [2021-12-06 21:58:12,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:12,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16551195] [2021-12-06 21:58:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:12,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:58:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:58:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:58:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:58:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 21:58:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:58:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:58:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:58:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:58:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:58:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:58:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 21:58:12,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:12,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16551195] [2021-12-06 21:58:12,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16551195] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:12,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777983909] [2021-12-06 21:58:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:12,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:12,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:12,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:58:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:12,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:58:12,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:58:12,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:58:12,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777983909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:12,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:58:12,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 21:58:12,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454508087] [2021-12-06 21:58:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:12,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:58:12,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:58:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:58:12,657 INFO L87 Difference]: Start difference. First operand 267 states and 400 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:12,688 INFO L93 Difference]: Finished difference Result 389 states and 567 transitions. [2021-12-06 21:58:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:58:12,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2021-12-06 21:58:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:12,691 INFO L225 Difference]: With dead ends: 389 [2021-12-06 21:58:12,691 INFO L226 Difference]: Without dead ends: 270 [2021-12-06 21:58:12,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 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 21:58:12,694 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 794 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 21:58:12,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 794 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:58:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-06 21:58:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2021-12-06 21:58:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 208 states have (on average 1.5240384615384615) internal successors, (317), 211 states have internal predecessors, (317), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-06 21:58:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 402 transitions. [2021-12-06 21:58:12,712 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 402 transitions. Word has length 112 [2021-12-06 21:58:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:12,713 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 402 transitions. [2021-12-06 21:58:12,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 402 transitions. [2021-12-06 21:58:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 21:58:12,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:12,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 21:58:12,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:58:12,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:12,918 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1661890211, now seen corresponding path program 1 times [2021-12-06 21:58:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157377970] [2021-12-06 21:58:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:12,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:58:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:58:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:58:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 21:58:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 21:58:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:58:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:58:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:58:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:58:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:58:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:58:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:58:13,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157377970] [2021-12-06 21:58:13,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157377970] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248262122] [2021-12-06 21:58:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:13,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:13,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:13,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:13,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:58:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:58:13,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:58:13,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:58:13,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248262122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:13,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:58:13,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 21:58:13,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589388186] [2021-12-06 21:58:13,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:13,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:58:13,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:58:13,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:58:13,366 INFO L87 Difference]: Start difference. First operand 269 states and 402 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:13,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:13,389 INFO L93 Difference]: Finished difference Result 563 states and 855 transitions. [2021-12-06 21:58:13,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:58:13,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2021-12-06 21:58:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:13,394 INFO L225 Difference]: With dead ends: 563 [2021-12-06 21:58:13,394 INFO L226 Difference]: Without dead ends: 321 [2021-12-06 21:58:13,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 142 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 21:58:13,397 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 99 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 768 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 21:58:13,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 768 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:58:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-06 21:58:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 313. [2021-12-06 21:58:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 241 states have (on average 1.5394190871369295) internal successors, (371), 244 states have internal predecessors, (371), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-06 21:58:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 478 transitions. [2021-12-06 21:58:13,421 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 478 transitions. Word has length 118 [2021-12-06 21:58:13,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:13,421 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 478 transitions. [2021-12-06 21:58:13,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 478 transitions. [2021-12-06 21:58:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 21:58:13,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:13,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 21:58:13,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:58:13,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:13,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1202284878, now seen corresponding path program 1 times [2021-12-06 21:58:13,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:13,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886017539] [2021-12-06 21:58:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:13,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:58:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:58:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:58:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 21:58:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:58:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:58:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:58:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:58:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:58:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:58:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:58:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:58:13,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886017539] [2021-12-06 21:58:13,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886017539] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:13,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024632142] [2021-12-06 21:58:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:13,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:13,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:58:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:13,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:58:13,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 21:58:14,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:58:14,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024632142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:14,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:58:14,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-06 21:58:14,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623792511] [2021-12-06 21:58:14,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:14,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:58:14,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:58:14,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:58:14,136 INFO L87 Difference]: Start difference. First operand 313 states and 478 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:14,191 INFO L93 Difference]: Finished difference Result 617 states and 946 transitions. [2021-12-06 21:58:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:58:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-12-06 21:58:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:14,195 INFO L225 Difference]: With dead ends: 617 [2021-12-06 21:58:14,195 INFO L226 Difference]: Without dead ends: 315 [2021-12-06 21:58:14,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:58:14,198 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 117 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1428 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 21:58:14,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1428 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:58:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-06 21:58:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-06 21:58:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 242 states have (on average 1.537190082644628) internal successors, (372), 246 states have internal predecessors, (372), 54 states have call successors, (54), 17 states have call predecessors, (54), 18 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2021-12-06 21:58:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 481 transitions. [2021-12-06 21:58:14,219 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 481 transitions. Word has length 119 [2021-12-06 21:58:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:14,220 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 481 transitions. [2021-12-06 21:58:14,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 481 transitions. [2021-12-06 21:58:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 21:58:14,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:14,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:14,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:58:14,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:14,424 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1757606202, now seen corresponding path program 1 times [2021-12-06 21:58:14,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:14,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108434578] [2021-12-06 21:58:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:14,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 21:58:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 21:58:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 21:58:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:58:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:58:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:58:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:58:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:58:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:58:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:58:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:58:14,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:14,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108434578] [2021-12-06 21:58:14,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108434578] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:14,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195524099] [2021-12-06 21:58:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:14,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:14,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:14,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:14,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:58:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:14,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:58:14,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 21:58:14,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:58:14,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195524099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:14,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:58:14,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-06 21:58:14,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653904014] [2021-12-06 21:58:14,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:14,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:58:14,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:14,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:58:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:58:14,823 INFO L87 Difference]: Start difference. First operand 315 states and 481 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:14,878 INFO L93 Difference]: Finished difference Result 619 states and 951 transitions. [2021-12-06 21:58:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:58:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-12-06 21:58:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:14,881 INFO L225 Difference]: With dead ends: 619 [2021-12-06 21:58:14,881 INFO L226 Difference]: Without dead ends: 317 [2021-12-06 21:58:14,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:58:14,883 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 116 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1417 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 21:58:14,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1417 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:58:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-06 21:58:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-12-06 21:58:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.5349794238683128) internal successors, (373), 248 states have internal predecessors, (373), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2021-12-06 21:58:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 487 transitions. [2021-12-06 21:58:14,899 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 487 transitions. Word has length 120 [2021-12-06 21:58:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:14,899 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 487 transitions. [2021-12-06 21:58:14,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 487 transitions. [2021-12-06 21:58:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 21:58:14,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:14,901 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 21:58:14,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:58:15,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:15,102 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -957882069, now seen corresponding path program 1 times [2021-12-06 21:58:15,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:15,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328134056] [2021-12-06 21:58:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:15,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 21:58:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 21:58:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:58:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:58:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:58:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:58:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:58:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:58:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:58:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:58:15,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:15,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328134056] [2021-12-06 21:58:15,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328134056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:15,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:15,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:58:15,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677186625] [2021-12-06 21:58:15,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:15,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:58:15,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:58:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:58:15,318 INFO L87 Difference]: Start difference. First operand 317 states and 487 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:16,085 INFO L93 Difference]: Finished difference Result 665 states and 1026 transitions. [2021-12-06 21:58:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:58:16,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-12-06 21:58:16,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:16,090 INFO L225 Difference]: With dead ends: 665 [2021-12-06 21:58:16,090 INFO L226 Difference]: Without dead ends: 371 [2021-12-06 21:58:16,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:58:16,093 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 694 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:16,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 1236 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:58:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-06 21:58:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 317. [2021-12-06 21:58:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.5349794238683128) internal successors, (373), 248 states have internal predecessors, (373), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2021-12-06 21:58:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 486 transitions. [2021-12-06 21:58:16,127 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 486 transitions. Word has length 121 [2021-12-06 21:58:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:16,127 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 486 transitions. [2021-12-06 21:58:16,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 486 transitions. [2021-12-06 21:58:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 21:58:16,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:16,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 21:58:16,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:58:16,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1705612417, now seen corresponding path program 2 times [2021-12-06 21:58:16,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:16,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851928988] [2021-12-06 21:58:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:16,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:58:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 21:58:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:58:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:58:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:58:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:58:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:58:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:58:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:58:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:58:16,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:16,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851928988] [2021-12-06 21:58:16,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851928988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:16,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:16,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:58:16,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104142103] [2021-12-06 21:58:16,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:16,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:58:16,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:16,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:58:16,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:58:16,249 INFO L87 Difference]: Start difference. First operand 317 states and 486 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:16,976 INFO L93 Difference]: Finished difference Result 667 states and 1029 transitions. [2021-12-06 21:58:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:58:16,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-12-06 21:58:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:16,980 INFO L225 Difference]: With dead ends: 667 [2021-12-06 21:58:16,980 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 21:58:16,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:58:16,982 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 690 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:16,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 1237 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:58:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 21:58:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 319. [2021-12-06 21:58:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 244 states have (on average 1.5327868852459017) internal successors, (374), 250 states have internal predecessors, (374), 54 states have call successors, (54), 17 states have call predecessors, (54), 20 states have return successors, (61), 53 states have call predecessors, (61), 53 states have call successors, (61) [2021-12-06 21:58:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 489 transitions. [2021-12-06 21:58:17,007 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 489 transitions. Word has length 122 [2021-12-06 21:58:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:17,007 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 489 transitions. [2021-12-06 21:58:17,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:58:17,008 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 489 transitions. [2021-12-06 21:58:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 21:58:17,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:17,010 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 21:58:17,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:58:17,011 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash -943611344, now seen corresponding path program 1 times [2021-12-06 21:58:17,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:17,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834620012] [2021-12-06 21:58:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:17,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 21:58:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:58:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:58:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:58:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:58:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:58:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:58:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:58:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:58:17,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:17,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834620012] [2021-12-06 21:58:17,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834620012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:17,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:17,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:58:17,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721312358] [2021-12-06 21:58:17,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:17,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:58:17,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:17,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:58:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:58:17,131 INFO L87 Difference]: Start difference. First operand 319 states and 489 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:58:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:18,054 INFO L93 Difference]: Finished difference Result 665 states and 1024 transitions. [2021-12-06 21:58:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:58:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2021-12-06 21:58:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:18,057 INFO L225 Difference]: With dead ends: 665 [2021-12-06 21:58:18,057 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 21:58:18,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:58:18,059 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 796 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:18,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 1631 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:58:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 21:58:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 319. [2021-12-06 21:58:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 244 states have (on average 1.5327868852459017) internal successors, (374), 250 states have internal predecessors, (374), 54 states have call successors, (54), 17 states have call predecessors, (54), 20 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2021-12-06 21:58:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 488 transitions. [2021-12-06 21:58:18,076 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 488 transitions. Word has length 123 [2021-12-06 21:58:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:18,076 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 488 transitions. [2021-12-06 21:58:18,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:58:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 488 transitions. [2021-12-06 21:58:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 21:58:18,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:18,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 21:58:18,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:58:18,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash 334111285, now seen corresponding path program 2 times [2021-12-06 21:58:18,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:18,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726725903] [2021-12-06 21:58:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:18,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 21:58:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:58:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:58:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:58:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:58:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:58:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:58:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:58:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:58:18,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:18,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726725903] [2021-12-06 21:58:18,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726725903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:18,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:18,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:58:18,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987062862] [2021-12-06 21:58:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:18,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:58:18,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:58:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:58:18,194 INFO L87 Difference]: Start difference. First operand 319 states and 488 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:58:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:19,084 INFO L93 Difference]: Finished difference Result 667 states and 1030 transitions. [2021-12-06 21:58:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:58:19,084 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2021-12-06 21:58:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:19,086 INFO L225 Difference]: With dead ends: 667 [2021-12-06 21:58:19,087 INFO L226 Difference]: Without dead ends: 375 [2021-12-06 21:58:19,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:58:19,088 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 792 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:19,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 1632 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:58:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-06 21:58:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 321. [2021-12-06 21:58:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 245 states have (on average 1.530612244897959) internal successors, (375), 252 states have internal predecessors, (375), 54 states have call successors, (54), 17 states have call predecessors, (54), 21 states have return successors, (65), 53 states have call predecessors, (65), 53 states have call successors, (65) [2021-12-06 21:58:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 494 transitions. [2021-12-06 21:58:19,104 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 494 transitions. Word has length 124 [2021-12-06 21:58:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:19,104 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 494 transitions. [2021-12-06 21:58:19,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:58:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 494 transitions. [2021-12-06 21:58:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 21:58:19,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:19,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 21:58:19,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:58:19,106 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1355788075, now seen corresponding path program 1 times [2021-12-06 21:58:19,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:19,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660941430] [2021-12-06 21:58:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:19,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 21:58:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:58:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:58:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:58:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:58:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:58:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:58:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:58:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:19,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660941430] [2021-12-06 21:58:19,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660941430] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529225581] [2021-12-06 21:58:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:19,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:19,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:19,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:58:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:19,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:58:19,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:19,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:58:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:19,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529225581] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:58:19,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:58:19,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-06 21:58:19,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656011102] [2021-12-06 21:58:19,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:58:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:58:19,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:58:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:19,494 INFO L87 Difference]: Start difference. First operand 321 states and 494 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 21:58:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:20,160 INFO L93 Difference]: Finished difference Result 821 states and 1328 transitions. [2021-12-06 21:58:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:58:20,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 125 [2021-12-06 21:58:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:20,165 INFO L225 Difference]: With dead ends: 821 [2021-12-06 21:58:20,165 INFO L226 Difference]: Without dead ends: 702 [2021-12-06 21:58:20,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:58:20,166 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 974 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:20,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 1719 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:58:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-12-06 21:58:20,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 624. [2021-12-06 21:58:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 484 states have (on average 1.5971074380165289) internal successors, (773), 491 states have internal predecessors, (773), 118 states have call successors, (118), 17 states have call predecessors, (118), 21 states have return successors, (139), 117 states have call predecessors, (139), 117 states have call successors, (139) [2021-12-06 21:58:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1030 transitions. [2021-12-06 21:58:20,199 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1030 transitions. Word has length 125 [2021-12-06 21:58:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:20,199 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 1030 transitions. [2021-12-06 21:58:20,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 21:58:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1030 transitions. [2021-12-06 21:58:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 21:58:20,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:20,203 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:20,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:58:20,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 21:58:20,404 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1248123790, now seen corresponding path program 1 times [2021-12-06 21:58:20,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:20,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008012416] [2021-12-06 21:58:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:20,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:58:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:58:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:58:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:58:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:58:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:58:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:58:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 21:58:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:20,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:20,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008012416] [2021-12-06 21:58:20,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008012416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:20,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:20,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:20,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105598846] [2021-12-06 21:58:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:20,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:20,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:20,510 INFO L87 Difference]: Start difference. First operand 624 states and 1030 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:20,975 INFO L93 Difference]: Finished difference Result 1542 states and 2607 transitions. [2021-12-06 21:58:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-06 21:58:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:20,981 INFO L225 Difference]: With dead ends: 1542 [2021-12-06 21:58:20,981 INFO L226 Difference]: Without dead ends: 986 [2021-12-06 21:58:20,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:20,983 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 683 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:20,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 1034 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-12-06 21:58:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 924. [2021-12-06 21:58:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 720 states have (on average 1.6083333333333334) internal successors, (1158), 727 states have internal predecessors, (1158), 182 states have call successors, (182), 17 states have call predecessors, (182), 21 states have return successors, (213), 181 states have call predecessors, (213), 181 states have call successors, (213) [2021-12-06 21:58:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1553 transitions. [2021-12-06 21:58:21,027 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1553 transitions. Word has length 131 [2021-12-06 21:58:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:21,027 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1553 transitions. [2021-12-06 21:58:21,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1553 transitions. [2021-12-06 21:58:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:58:21,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:21,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:21,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:58:21,032 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:21,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:21,032 INFO L85 PathProgramCache]: Analyzing trace with hash -591151818, now seen corresponding path program 1 times [2021-12-06 21:58:21,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:21,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284946825] [2021-12-06 21:58:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:21,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:58:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:58:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:58:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:58:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:58:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:58:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:58:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:58:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:21,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:21,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284946825] [2021-12-06 21:58:21,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284946825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:21,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:21,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:21,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595793734] [2021-12-06 21:58:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:21,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:21,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:21,110 INFO L87 Difference]: Start difference. First operand 924 states and 1553 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:21,627 INFO L93 Difference]: Finished difference Result 2257 states and 3852 transitions. [2021-12-06 21:58:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-06 21:58:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:21,635 INFO L225 Difference]: With dead ends: 2257 [2021-12-06 21:58:21,635 INFO L226 Difference]: Without dead ends: 1454 [2021-12-06 21:58:21,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:21,638 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 681 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:21,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 1000 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-12-06 21:58:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1392. [2021-12-06 21:58:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1093 states have (on average 1.614821591948765) internal successors, (1765), 1100 states have internal predecessors, (1765), 277 states have call successors, (277), 17 states have call predecessors, (277), 21 states have return successors, (308), 276 states have call predecessors, (308), 276 states have call successors, (308) [2021-12-06 21:58:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2350 transitions. [2021-12-06 21:58:21,708 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2350 transitions. Word has length 132 [2021-12-06 21:58:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:21,708 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2350 transitions. [2021-12-06 21:58:21,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2350 transitions. [2021-12-06 21:58:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 21:58:21,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:21,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:21,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:58:21,715 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1575438508, now seen corresponding path program 1 times [2021-12-06 21:58:21,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:21,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252779382] [2021-12-06 21:58:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:21,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:58:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:58:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:58:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:58:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:58:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:58:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:58:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:58:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:21,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252779382] [2021-12-06 21:58:21,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252779382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:21,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:21,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:21,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980073123] [2021-12-06 21:58:21,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:21,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:21,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:21,798 INFO L87 Difference]: Start difference. First operand 1392 states and 2350 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:22,284 INFO L93 Difference]: Finished difference Result 3304 states and 5693 transitions. [2021-12-06 21:58:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:22,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-06 21:58:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:22,298 INFO L225 Difference]: With dead ends: 3304 [2021-12-06 21:58:22,298 INFO L226 Difference]: Without dead ends: 2158 [2021-12-06 21:58:22,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:22,303 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 679 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:22,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 1004 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-12-06 21:58:22,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2096. [2021-12-06 21:58:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1674 states have (on average 1.6200716845878136) internal successors, (2712), 1681 states have internal predecessors, (2712), 400 states have call successors, (400), 17 states have call predecessors, (400), 21 states have return successors, (447), 399 states have call predecessors, (447), 399 states have call successors, (447) [2021-12-06 21:58:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3559 transitions. [2021-12-06 21:58:22,442 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3559 transitions. Word has length 133 [2021-12-06 21:58:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:22,442 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 3559 transitions. [2021-12-06 21:58:22,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3559 transitions. [2021-12-06 21:58:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:58:22,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:22,450 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:22,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:58:22,450 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1009111593, now seen corresponding path program 1 times [2021-12-06 21:58:22,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:22,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846903325] [2021-12-06 21:58:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:22,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:58:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:58:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:58:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:58:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:58:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:58:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:58:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 21:58:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:22,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:22,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846903325] [2021-12-06 21:58:22,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846903325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:22,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:22,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:22,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304793819] [2021-12-06 21:58:22,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:22,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:22,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:22,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:22,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:22,526 INFO L87 Difference]: Start difference. First operand 2096 states and 3559 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:23,135 INFO L93 Difference]: Finished difference Result 4923 states and 8547 transitions. [2021-12-06 21:58:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-06 21:58:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:23,158 INFO L225 Difference]: With dead ends: 4923 [2021-12-06 21:58:23,159 INFO L226 Difference]: Without dead ends: 3277 [2021-12-06 21:58:23,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:23,165 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 677 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:23,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 1004 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-06 21:58:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3215. [2021-12-06 21:58:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 2614 states have (on average 1.6231828615149198) internal successors, (4243), 2621 states have internal predecessors, (4243), 579 states have call successors, (579), 17 states have call predecessors, (579), 21 states have return successors, (652), 578 states have call predecessors, (652), 578 states have call successors, (652) [2021-12-06 21:58:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5474 transitions. [2021-12-06 21:58:23,337 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5474 transitions. Word has length 134 [2021-12-06 21:58:23,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:23,337 INFO L470 AbstractCegarLoop]: Abstraction has 3215 states and 5474 transitions. [2021-12-06 21:58:23,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5474 transitions. [2021-12-06 21:58:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:58:23,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:23,348 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:23,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:58:23,348 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1845738800, now seen corresponding path program 1 times [2021-12-06 21:58:23,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:23,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930907269] [2021-12-06 21:58:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:23,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:58:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:58:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:58:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:58:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:58:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:58:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:58:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 21:58:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:23,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:23,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930907269] [2021-12-06 21:58:23,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930907269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:23,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:23,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:23,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800922726] [2021-12-06 21:58:23,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:23,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:23,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:23,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:23,422 INFO L87 Difference]: Start difference. First operand 3215 states and 5474 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:24,005 INFO L93 Difference]: Finished difference Result 7841 states and 13646 transitions. [2021-12-06 21:58:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-06 21:58:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:24,033 INFO L225 Difference]: With dead ends: 7841 [2021-12-06 21:58:24,033 INFO L226 Difference]: Without dead ends: 5308 [2021-12-06 21:58:24,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:24,041 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 675 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:24,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1032 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2021-12-06 21:58:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5246. [2021-12-06 21:58:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 4269 states have (on average 1.6151323494963692) internal successors, (6895), 4276 states have internal predecessors, (6895), 955 states have call successors, (955), 17 states have call predecessors, (955), 21 states have return successors, (1072), 954 states have call predecessors, (1072), 954 states have call successors, (1072) [2021-12-06 21:58:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 8922 transitions. [2021-12-06 21:58:24,333 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 8922 transitions. Word has length 135 [2021-12-06 21:58:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:24,334 INFO L470 AbstractCegarLoop]: Abstraction has 5246 states and 8922 transitions. [2021-12-06 21:58:24,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 8922 transitions. [2021-12-06 21:58:24,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 21:58:24,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:24,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:24,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:58:24,355 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1080672677, now seen corresponding path program 1 times [2021-12-06 21:58:24,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:24,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554343420] [2021-12-06 21:58:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:24,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:58:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:58:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:58:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:58:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:58:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:58:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:58:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 21:58:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:24,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554343420] [2021-12-06 21:58:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554343420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:24,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:24,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:24,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539343283] [2021-12-06 21:58:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:24,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:24,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:24,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:24,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:24,436 INFO L87 Difference]: Start difference. First operand 5246 states and 8922 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:25,191 INFO L93 Difference]: Finished difference Result 12983 states and 22555 transitions. [2021-12-06 21:58:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-06 21:58:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:25,237 INFO L225 Difference]: With dead ends: 12983 [2021-12-06 21:58:25,237 INFO L226 Difference]: Without dead ends: 8796 [2021-12-06 21:58:25,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:25,247 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 673 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:25,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1003 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2021-12-06 21:58:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8734. [2021-12-06 21:58:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8734 states, 7151 states have (on average 1.612222066843798) internal successors, (11529), 7158 states have internal predecessors, (11529), 1561 states have call successors, (1561), 17 states have call predecessors, (1561), 21 states have return successors, (1756), 1560 states have call predecessors, (1756), 1560 states have call successors, (1756) [2021-12-06 21:58:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8734 states to 8734 states and 14846 transitions. [2021-12-06 21:58:25,634 INFO L78 Accepts]: Start accepts. Automaton has 8734 states and 14846 transitions. Word has length 136 [2021-12-06 21:58:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:25,634 INFO L470 AbstractCegarLoop]: Abstraction has 8734 states and 14846 transitions. [2021-12-06 21:58:25,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8734 states and 14846 transitions. [2021-12-06 21:58:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 21:58:25,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:25,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:25,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:58:25,654 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash 53915538, now seen corresponding path program 1 times [2021-12-06 21:58:25,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:25,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960689231] [2021-12-06 21:58:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:25,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:58:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:58:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:58:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:58:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:58:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:58:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 21:58:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 21:58:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:25,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:25,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960689231] [2021-12-06 21:58:25,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960689231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:25,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:25,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:25,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814855041] [2021-12-06 21:58:25,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:25,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:25,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:25,733 INFO L87 Difference]: Start difference. First operand 8734 states and 14846 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:26,662 INFO L93 Difference]: Finished difference Result 22642 states and 39261 transitions. [2021-12-06 21:58:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:26,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-06 21:58:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:26,709 INFO L225 Difference]: With dead ends: 22642 [2021-12-06 21:58:26,709 INFO L226 Difference]: Without dead ends: 15389 [2021-12-06 21:58:26,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:26,742 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 671 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:26,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1064 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15389 states. [2021-12-06 21:58:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15389 to 15327. [2021-12-06 21:58:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15327 states, 12541 states have (on average 1.6023443106610318) internal successors, (20095), 12548 states have internal predecessors, (20095), 2764 states have call successors, (2764), 17 states have call predecessors, (2764), 21 states have return successors, (3103), 2763 states have call predecessors, (3103), 2763 states have call successors, (3103) [2021-12-06 21:58:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15327 states to 15327 states and 25962 transitions. [2021-12-06 21:58:27,368 INFO L78 Accepts]: Start accepts. Automaton has 15327 states and 25962 transitions. Word has length 137 [2021-12-06 21:58:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:27,369 INFO L470 AbstractCegarLoop]: Abstraction has 15327 states and 25962 transitions. [2021-12-06 21:58:27,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 15327 states and 25962 transitions. [2021-12-06 21:58:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-06 21:58:27,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:27,393 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:27,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:58:27,393 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1481692516, now seen corresponding path program 1 times [2021-12-06 21:58:27,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:27,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627859084] [2021-12-06 21:58:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:27,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:58:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:58:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:58:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:58:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:58:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:58:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:58:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 21:58:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:27,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627859084] [2021-12-06 21:58:27,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627859084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:27,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:27,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:27,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950824414] [2021-12-06 21:58:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:27,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:27,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:27,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:27,456 INFO L87 Difference]: Start difference. First operand 15327 states and 25962 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:28,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:28,821 INFO L93 Difference]: Finished difference Result 40598 states and 70244 transitions. [2021-12-06 21:58:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:28,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-12-06 21:58:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:28,900 INFO L225 Difference]: With dead ends: 40598 [2021-12-06 21:58:28,900 INFO L226 Difference]: Without dead ends: 27359 [2021-12-06 21:58:28,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:28,928 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 669 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:28,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 1009 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:58:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27359 states. [2021-12-06 21:58:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27359 to 27297. [2021-12-06 21:58:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27297 states, 22472 states have (on average 1.597677109291563) internal successors, (35903), 22479 states have internal predecessors, (35903), 4803 states have call successors, (4803), 17 states have call predecessors, (4803), 21 states have return successors, (5416), 4802 states have call predecessors, (5416), 4802 states have call successors, (5416) [2021-12-06 21:58:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27297 states to 27297 states and 46122 transitions. [2021-12-06 21:58:30,279 INFO L78 Accepts]: Start accepts. Automaton has 27297 states and 46122 transitions. Word has length 138 [2021-12-06 21:58:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:30,279 INFO L470 AbstractCegarLoop]: Abstraction has 27297 states and 46122 transitions. [2021-12-06 21:58:30,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 27297 states and 46122 transitions. [2021-12-06 21:58:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-06 21:58:30,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:30,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:30,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:58:30,306 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash 808221876, now seen corresponding path program 1 times [2021-12-06 21:58:30,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:30,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850230685] [2021-12-06 21:58:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:30,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:58:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:58:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:58:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:58:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:58:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:58:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:58:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:58:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:30,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:30,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850230685] [2021-12-06 21:58:30,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850230685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:30,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:30,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:30,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073075214] [2021-12-06 21:58:30,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:30,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:30,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:30,373 INFO L87 Difference]: Start difference. First operand 27297 states and 46122 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:32,434 INFO L93 Difference]: Finished difference Result 74385 states and 127843 transitions. [2021-12-06 21:58:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:32,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-12-06 21:58:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:32,586 INFO L225 Difference]: With dead ends: 74385 [2021-12-06 21:58:32,586 INFO L226 Difference]: Without dead ends: 49908 [2021-12-06 21:58:32,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:32,689 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 667 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:32,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1029 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:58:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49908 states. [2021-12-06 21:58:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49908 to 49846. [2021-12-06 21:58:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49846 states, 41306 states have (on average 1.591633176778192) internal successors, (65744), 41313 states have internal predecessors, (65744), 8518 states have call successors, (8518), 17 states have call predecessors, (8518), 21 states have return successors, (9663), 8517 states have call predecessors, (9663), 8517 states have call successors, (9663) [2021-12-06 21:58:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49846 states to 49846 states and 83925 transitions. [2021-12-06 21:58:35,053 INFO L78 Accepts]: Start accepts. Automaton has 49846 states and 83925 transitions. Word has length 139 [2021-12-06 21:58:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:35,053 INFO L470 AbstractCegarLoop]: Abstraction has 49846 states and 83925 transitions. [2021-12-06 21:58:35,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 49846 states and 83925 transitions. [2021-12-06 21:58:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 21:58:35,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:35,087 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:35,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:58:35,087 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1362912252, now seen corresponding path program 1 times [2021-12-06 21:58:35,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:35,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072870961] [2021-12-06 21:58:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:35,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:58:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:58:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:58:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:58:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:58:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:58:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 21:58:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 21:58:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:58:35,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072870961] [2021-12-06 21:58:35,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072870961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:35,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:58:35,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:58:35,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664676755] [2021-12-06 21:58:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:35,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:58:35,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:58:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:58:35,156 INFO L87 Difference]: Start difference. First operand 49846 states and 83925 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:38,539 INFO L93 Difference]: Finished difference Result 92871 states and 159974 transitions. [2021-12-06 21:58:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:58:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2021-12-06 21:58:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:38,843 INFO L225 Difference]: With dead ends: 92871 [2021-12-06 21:58:38,843 INFO L226 Difference]: Without dead ends: 92752 [2021-12-06 21:58:38,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:58:38,878 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 665 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:38,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1009 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:58:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92752 states. [2021-12-06 21:58:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92752 to 92690. [2021-12-06 21:58:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92690 states, 77351 states have (on average 1.5840777753358068) internal successors, (122530), 77358 states have internal predecessors, (122530), 15317 states have call successors, (15317), 17 states have call predecessors, (15317), 21 states have return successors, (17508), 15316 states have call predecessors, (17508), 15316 states have call successors, (17508) [2021-12-06 21:58:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92690 states to 92690 states and 155355 transitions. [2021-12-06 21:58:43,211 INFO L78 Accepts]: Start accepts. Automaton has 92690 states and 155355 transitions. Word has length 140 [2021-12-06 21:58:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:58:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 92690 states and 155355 transitions. [2021-12-06 21:58:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:58:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 92690 states and 155355 transitions. [2021-12-06 21:58:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 21:58:43,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:58:43,253 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:58:43,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:58:43,253 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:58:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:58:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2017557517, now seen corresponding path program 1 times [2021-12-06 21:58:43,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:58:43,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448012268] [2021-12-06 21:58:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:43,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:58:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:58:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:58:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:58:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:58:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:58:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:58:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:58:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:58:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:58:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:58:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:58:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:58:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 21:58:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 21:58:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:58:43,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:58:43,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448012268] [2021-12-06 21:58:43,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448012268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:58:43,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263761176] [2021-12-06 21:58:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:58:43,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:58:43,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:58:43,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:58:43,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:58:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:58:43,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 21:58:43,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:58:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 21:58:44,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:58:44,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263761176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:58:44,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:58:44,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 23 [2021-12-06 21:58:44,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396935116] [2021-12-06 21:58:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:58:44,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:58:44,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:58:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:58:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:58:44,022 INFO L87 Difference]: Start difference. First operand 92690 states and 155355 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-06 21:58:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:58:50,606 INFO L93 Difference]: Finished difference Result 184760 states and 315156 transitions. [2021-12-06 21:58:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:58:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 141 [2021-12-06 21:58:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:58:51,260 INFO L225 Difference]: With dead ends: 184760 [2021-12-06 21:58:51,261 INFO L226 Difference]: Without dead ends: 184649 [2021-12-06 21:58:51,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2021-12-06 21:58:51,314 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 783 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:58:51,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 3962 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:58:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184649 states. [2021-12-06 21:58:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184649 to 184578. [2021-12-06 21:58:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184578 states, 154107 states have (on average 1.5850091170420553) internal successors, (244261), 154009 states have internal predecessors, (244261), 30421 states have call successors, (30421), 44 states have call predecessors, (30421), 49 states have return successors, (38070), 30530 states have call predecessors, (38070), 30418 states have call successors, (38070) [2021-12-06 21:59:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184578 states to 184578 states and 312752 transitions. [2021-12-06 21:59:00,210 INFO L78 Accepts]: Start accepts. Automaton has 184578 states and 312752 transitions. Word has length 141 [2021-12-06 21:59:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 184578 states and 312752 transitions. [2021-12-06 21:59:00,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-06 21:59:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 184578 states and 312752 transitions. [2021-12-06 21:59:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 21:59:00,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:00,301 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:00,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 21:59:00,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:59:00,503 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1134632860, now seen corresponding path program 1 times [2021-12-06 21:59:00,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026151599] [2021-12-06 21:59:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:00,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:59:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:59:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:59:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:59:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:59:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:59:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:59:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:59:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:59:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:59:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 21:59:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 21:59:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:59:00,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:00,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026151599] [2021-12-06 21:59:00,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026151599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:00,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:00,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:59:00,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598104363] [2021-12-06 21:59:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:00,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:59:00,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:00,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:59:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:00,767 INFO L87 Difference]: Start difference. First operand 184578 states and 312752 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:59:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:07,863 INFO L93 Difference]: Finished difference Result 185578 states and 320689 transitions. [2021-12-06 21:59:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:59:07,864 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 142 [2021-12-06 21:59:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:08,662 INFO L225 Difference]: With dead ends: 185578 [2021-12-06 21:59:08,662 INFO L226 Difference]: Without dead ends: 184986 [2021-12-06 21:59:08,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:59:08,717 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1331 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:08,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 1774 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:59:08,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184986 states. [2021-12-06 21:59:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184986 to 184667. [2021-12-06 21:59:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184667 states, 154169 states have (on average 1.5848906070610824) internal successors, (244341), 154072 states have internal predecessors, (244341), 30448 states have call successors, (30448), 47 states have call predecessors, (30448), 49 states have return successors, (38099), 30556 states have call predecessors, (38099), 30445 states have call successors, (38099) [2021-12-06 21:59:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184667 states to 184667 states and 312888 transitions. [2021-12-06 21:59:18,095 INFO L78 Accepts]: Start accepts. Automaton has 184667 states and 312888 transitions. Word has length 142 [2021-12-06 21:59:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:18,095 INFO L470 AbstractCegarLoop]: Abstraction has 184667 states and 312888 transitions. [2021-12-06 21:59:18,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 21:59:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 184667 states and 312888 transitions. [2021-12-06 21:59:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 21:59:18,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:18,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:18,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:59:18,188 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -742297484, now seen corresponding path program 1 times [2021-12-06 21:59:18,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:18,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784178379] [2021-12-06 21:59:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:18,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:59:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:59:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:59:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:59:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:59:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:59:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:59:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:59:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:59:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:59:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 21:59:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 21:59:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:59:18,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:18,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784178379] [2021-12-06 21:59:18,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784178379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:18,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:18,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:18,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381493714] [2021-12-06 21:59:18,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:18,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:18,261 INFO L87 Difference]: Start difference. First operand 184667 states and 312888 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:59:29,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:29,117 INFO L93 Difference]: Finished difference Result 277785 states and 489328 transitions. [2021-12-06 21:59:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:59:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2021-12-06 21:59:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:30,118 INFO L225 Difference]: With dead ends: 277785 [2021-12-06 21:59:30,118 INFO L226 Difference]: Without dead ends: 277518 [2021-12-06 21:59:30,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:59:30,212 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1633 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:30,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 1441 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:59:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277518 states. [2021-12-06 21:59:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277518 to 276604. [2021-12-06 21:59:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276604 states, 230957 states have (on average 1.5851738635330386) internal successors, (366107), 230757 states have internal predecessors, (366107), 45570 states have call successors, (45570), 74 states have call predecessors, (45570), 76 states have return successors, (64036), 45787 states have call predecessors, (64036), 45565 states have call successors, (64036) [2021-12-06 21:59:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276604 states to 276604 states and 475713 transitions. [2021-12-06 21:59:45,079 INFO L78 Accepts]: Start accepts. Automaton has 276604 states and 475713 transitions. Word has length 142 [2021-12-06 21:59:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:45,079 INFO L470 AbstractCegarLoop]: Abstraction has 276604 states and 475713 transitions. [2021-12-06 21:59:45,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 21:59:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 276604 states and 475713 transitions. [2021-12-06 21:59:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 21:59:45,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:45,232 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:45,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:59:45,232 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1185975218, now seen corresponding path program 1 times [2021-12-06 21:59:45,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:45,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879621980] [2021-12-06 21:59:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:45,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:59:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:59:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:59:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:59:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:59:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:59:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:59:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:59:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:59:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:59:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 21:59:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 21:59:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 21:59:45,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:45,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879621980] [2021-12-06 21:59:45,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879621980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:45,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:45,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:59:45,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067501368] [2021-12-06 21:59:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:45,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:59:45,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:45,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:59:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:59:45,377 INFO L87 Difference]: Start difference. First operand 276604 states and 475713 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 21:59:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:58,941 INFO L93 Difference]: Finished difference Result 279807 states and 490020 transitions. [2021-12-06 21:59:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 21:59:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2021-12-06 21:59:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:00,035 INFO L225 Difference]: With dead ends: 279807 [2021-12-06 22:00:00,035 INFO L226 Difference]: Without dead ends: 279173 [2021-12-06 22:00:00,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 22:00:00,120 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 2107 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:00,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2107 Valid, 1217 Invalid, 3664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:00:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279173 states. [2021-12-06 22:00:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279173 to 278254. [2021-12-06 22:00:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278254 states, 232206 states have (on average 1.584265695115544) internal successors, (367876), 232051 states have internal predecessors, (367876), 45805 states have call successors, (45805), 209 states have call predecessors, (45805), 242 states have return successors, (64338), 46038 states have call predecessors, (64338), 45785 states have call successors, (64338) [2021-12-06 22:00:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278254 states to 278254 states and 478019 transitions. [2021-12-06 22:00:17,040 INFO L78 Accepts]: Start accepts. Automaton has 278254 states and 478019 transitions. Word has length 142 [2021-12-06 22:00:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:17,040 INFO L470 AbstractCegarLoop]: Abstraction has 278254 states and 478019 transitions. [2021-12-06 22:00:17,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 22:00:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 278254 states and 478019 transitions. [2021-12-06 22:00:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 22:00:17,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:17,187 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:00:17,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:00:17,188 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -530865558, now seen corresponding path program 1 times [2021-12-06 22:00:17,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:17,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660851258] [2021-12-06 22:00:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:17,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:00:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:00:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:00:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:00:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:00:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:00:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:00:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:00:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:00:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:00:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:00:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:00:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:00:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:00:17,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:17,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660851258] [2021-12-06 22:00:17,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660851258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:17,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:17,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 22:00:17,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390785672] [2021-12-06 22:00:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:17,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:00:17,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:00:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:00:17,300 INFO L87 Difference]: Start difference. First operand 278254 states and 478019 transitions. Second operand has 14 states, 12 states have (on average 8.083333333333334) internal successors, (97), 10 states have internal predecessors, (97), 7 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-06 22:00:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:30,276 INFO L93 Difference]: Finished difference Result 280722 states and 491253 transitions. [2021-12-06 22:00:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:00:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.083333333333334) internal successors, (97), 10 states have internal predecessors, (97), 7 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 143 [2021-12-06 22:00:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:31,265 INFO L225 Difference]: With dead ends: 280722 [2021-12-06 22:00:31,265 INFO L226 Difference]: Without dead ends: 278513 [2021-12-06 22:00:31,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:00:31,360 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 838 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:31,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 2598 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:00:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278513 states. [2021-12-06 22:00:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278513 to 277700. [2021-12-06 22:00:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277700 states, 231791 states have (on average 1.5845956055239419) internal successors, (367295), 231631 states have internal predecessors, (367295), 45709 states have call successors, (45709), 168 states have call predecessors, (45709), 199 states have return successors, (64226), 45935 states have call predecessors, (64226), 45694 states have call successors, (64226) [2021-12-06 22:00:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277700 states to 277700 states and 477230 transitions. [2021-12-06 22:00:48,241 INFO L78 Accepts]: Start accepts. Automaton has 277700 states and 477230 transitions. Word has length 143 [2021-12-06 22:00:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:48,241 INFO L470 AbstractCegarLoop]: Abstraction has 277700 states and 477230 transitions. [2021-12-06 22:00:48,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.083333333333334) internal successors, (97), 10 states have internal predecessors, (97), 7 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-06 22:00:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 277700 states and 477230 transitions. [2021-12-06 22:00:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 22:00:48,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:48,564 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:00:48,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:00:48,565 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -755326681, now seen corresponding path program 1 times [2021-12-06 22:00:48,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256241505] [2021-12-06 22:00:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:48,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:00:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:00:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:00:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:00:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:00:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:00:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:00:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:00:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:00:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:00:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:00:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:00:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:00:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:00:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:00:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:00:48,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:48,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256241505] [2021-12-06 22:00:48,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256241505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:48,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:48,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:00:48,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772306265] [2021-12-06 22:00:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:48,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:00:48,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:00:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:00:48,651 INFO L87 Difference]: Start difference. First operand 277700 states and 477230 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:01:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:01:02,640 INFO L93 Difference]: Finished difference Result 284736 states and 497489 transitions. [2021-12-06 22:01:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 22:01:02,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2021-12-06 22:01:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:01:03,790 INFO L225 Difference]: With dead ends: 284736 [2021-12-06 22:01:03,790 INFO L226 Difference]: Without dead ends: 282991 [2021-12-06 22:01:03,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 22:01:03,876 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1331 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:01:03,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 1600 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:01:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282991 states. [2021-12-06 22:01:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282991 to 277750. [2021-12-06 22:01:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277750 states, 231836 states have (on average 1.5844821339222555) internal successors, (367340), 231681 states have internal predecessors, (367340), 45709 states have call successors, (45709), 168 states have call predecessors, (45709), 204 states have return successors, (64236), 45935 states have call predecessors, (64236), 45694 states have call successors, (64236) [2021-12-06 22:01:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277750 states to 277750 states and 477285 transitions. [2021-12-06 22:01:20,506 INFO L78 Accepts]: Start accepts. Automaton has 277750 states and 477285 transitions. Word has length 152 [2021-12-06 22:01:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:01:20,506 INFO L470 AbstractCegarLoop]: Abstraction has 277750 states and 477285 transitions. [2021-12-06 22:01:20,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:01:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 277750 states and 477285 transitions. [2021-12-06 22:01:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 22:01:20,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:01:20,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:20,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:01:20,826 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:01:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:01:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1010205714, now seen corresponding path program 1 times [2021-12-06 22:01:20,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:01:20,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40520630] [2021-12-06 22:01:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:20,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:01:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:01:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:01:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:01:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:01:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:01:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:01:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:01:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:01:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:01:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:01:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:01:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:01:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:01:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:01:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:01:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:01:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:01:20,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:01:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40520630] [2021-12-06 22:01:20,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40520630] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:01:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411248466] [2021-12-06 22:01:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:20,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:01:20,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:01:20,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:01:20,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:01:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:21,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:01:21,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:01:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:01:21,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:01:21,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411248466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:01:21,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:01:21,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2021-12-06 22:01:21,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448952734] [2021-12-06 22:01:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:01:21,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:01:21,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:01:21,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:01:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:01:21,230 INFO L87 Difference]: Start difference. First operand 277750 states and 477285 transitions. Second operand has 9 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:01:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:01:32,759 INFO L93 Difference]: Finished difference Result 279609 states and 479870 transitions. [2021-12-06 22:01:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:01:32,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 152 [2021-12-06 22:01:32,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:01:33,698 INFO L225 Difference]: With dead ends: 279609 [2021-12-06 22:01:33,699 INFO L226 Difference]: Without dead ends: 277784 [2021-12-06 22:01:33,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:01:33,786 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 108 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:01:33,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 3081 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:01:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277784 states. [2021-12-06 22:01:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277784 to 277760. [2021-12-06 22:01:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277760 states, 231841 states have (on average 1.5844695286856079) internal successors, (367345), 231691 states have internal predecessors, (367345), 45709 states have call successors, (45709), 168 states have call predecessors, (45709), 209 states have return successors, (64246), 45935 states have call predecessors, (64246), 45694 states have call successors, (64246) [2021-12-06 22:01:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277760 states to 277760 states and 477300 transitions. [2021-12-06 22:01:50,559 INFO L78 Accepts]: Start accepts. Automaton has 277760 states and 477300 transitions. Word has length 152 [2021-12-06 22:01:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:01:50,560 INFO L470 AbstractCegarLoop]: Abstraction has 277760 states and 477300 transitions. [2021-12-06 22:01:50,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:01:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 277760 states and 477300 transitions. [2021-12-06 22:01:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 22:01:50,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:01:50,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:50,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:01:50,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 22:01:50,969 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:01:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:01:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2118065263, now seen corresponding path program 1 times [2021-12-06 22:01:50,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:01:50,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712202955] [2021-12-06 22:01:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:50,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:01:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:01:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:01:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:01:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:01:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:01:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:01:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:01:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:01:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:01:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:01:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:01:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:01:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:01:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:01:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:01:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:01:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:01:51,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:01:51,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712202955] [2021-12-06 22:01:51,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712202955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:01:51,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412749833] [2021-12-06 22:01:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:51,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:01:51,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:01:51,115 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:01:51,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:01:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:51,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:01:51,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:01:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:01:51,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:01:51,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412749833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:01:51,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:01:51,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2021-12-06 22:01:51,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124533924] [2021-12-06 22:01:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:01:51,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:01:51,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:01:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:01:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:01:51,431 INFO L87 Difference]: Start difference. First operand 277760 states and 477300 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 22:02:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:02:03,378 INFO L93 Difference]: Finished difference Result 278832 states and 478810 transitions. [2021-12-06 22:02:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:02:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 152 [2021-12-06 22:02:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:02:04,443 INFO L225 Difference]: With dead ends: 278832 [2021-12-06 22:02:04,443 INFO L226 Difference]: Without dead ends: 278465 [2021-12-06 22:02:04,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 22:02:04,524 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 618 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:02:04,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 4320 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:02:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278465 states. [2021-12-06 22:02:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278465 to 278169. [2021-12-06 22:02:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278169 states, 232145 states have (on average 1.584212453423507) internal successors, (367767), 232015 states have internal predecessors, (367767), 45771 states have call successors, (45771), 198 states have call predecessors, (45771), 252 states have return successors, (64335), 45997 states have call predecessors, (64335), 45753 states have call successors, (64335) [2021-12-06 22:02:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278169 states to 278169 states and 477873 transitions. [2021-12-06 22:02:21,733 INFO L78 Accepts]: Start accepts. Automaton has 278169 states and 477873 transitions. Word has length 152 [2021-12-06 22:02:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:02:21,733 INFO L470 AbstractCegarLoop]: Abstraction has 278169 states and 477873 transitions. [2021-12-06 22:02:21,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 22:02:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 278169 states and 477873 transitions. [2021-12-06 22:02:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 22:02:21,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:02:21,955 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:02:21,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:02:22,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 22:02:22,156 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:02:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1814606199, now seen corresponding path program 1 times [2021-12-06 22:02:22,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646283717] [2021-12-06 22:02:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:22,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:02:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:02:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:02:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:02:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:02:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:02:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:02:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:02:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:02:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:02:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:02:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:02:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:02:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:02:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:02:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:02:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:02:22,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:22,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646283717] [2021-12-06 22:02:22,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646283717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:22,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:22,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:02:22,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346061481] [2021-12-06 22:02:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:22,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:02:22,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:02:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:02:22,259 INFO L87 Difference]: Start difference. First operand 278169 states and 477873 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:02:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:02:35,777 INFO L93 Difference]: Finished difference Result 280289 states and 490993 transitions. [2021-12-06 22:02:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:02:35,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2021-12-06 22:02:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:02:36,773 INFO L225 Difference]: With dead ends: 280289 [2021-12-06 22:02:36,773 INFO L226 Difference]: Without dead ends: 279174 [2021-12-06 22:02:36,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:02:36,868 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 1100 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:02:36,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1522 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:02:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279174 states. [2021-12-06 22:02:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279174 to 277087. [2021-12-06 22:02:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277087 states, 231328 states have (on average 1.5848448955595518) internal successors, (366619), 231156 states have internal predecessors, (366619), 45610 states have call successors, (45610), 115 states have call predecessors, (45610), 148 states have return successors, (64135), 45836 states have call predecessors, (64135), 45601 states have call successors, (64135) [2021-12-06 22:02:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277087 states to 277087 states and 476364 transitions. [2021-12-06 22:02:54,607 INFO L78 Accepts]: Start accepts. Automaton has 277087 states and 476364 transitions. Word has length 152 [2021-12-06 22:02:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:02:54,607 INFO L470 AbstractCegarLoop]: Abstraction has 277087 states and 476364 transitions. [2021-12-06 22:02:54,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:02:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 277087 states and 476364 transitions. [2021-12-06 22:02:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 22:02:54,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:02:54,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:54,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 22:02:54,834 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:02:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:54,834 INFO L85 PathProgramCache]: Analyzing trace with hash 285354496, now seen corresponding path program 1 times [2021-12-06 22:02:54,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:54,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350566526] [2021-12-06 22:02:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:54,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:02:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:02:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:02:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:02:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:02:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:02:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:02:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:02:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:02:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:02:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:02:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:02:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:02:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:02:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:02:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:02:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:02:54,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350566526] [2021-12-06 22:02:54,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350566526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:02:54,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696354198] [2021-12-06 22:02:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:54,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:02:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:02:54,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:02:54,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:02:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:55,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:02:55,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:02:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:02:55,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:02:55,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696354198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:55,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:02:55,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 14 [2021-12-06 22:02:55,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815378458] [2021-12-06 22:02:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:55,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:02:55,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:02:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:02:55,235 INFO L87 Difference]: Start difference. First operand 277087 states and 476364 transitions. Second operand has 9 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:03:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:07,395 INFO L93 Difference]: Finished difference Result 278112 states and 477776 transitions. [2021-12-06 22:03:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:03:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 153 [2021-12-06 22:03:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:08,337 INFO L225 Difference]: With dead ends: 278112 [2021-12-06 22:03:08,337 INFO L226 Difference]: Without dead ends: 276952 [2021-12-06 22:03:08,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:03:08,424 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 107 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:08,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 3060 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:03:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276952 states. [2021-12-06 22:03:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276952 to 276926. [2021-12-06 22:03:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276926 states, 231209 states have (on average 1.584942627665878) internal successors, (366453), 231032 states have internal predecessors, (366453), 45582 states have call successors, (45582), 105 states have call predecessors, (45582), 134 states have return successors, (64092), 45805 states have call predecessors, (64092), 45574 states have call successors, (64092) [2021-12-06 22:03:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276926 states to 276926 states and 476127 transitions. [2021-12-06 22:03:25,297 INFO L78 Accepts]: Start accepts. Automaton has 276926 states and 476127 transitions. Word has length 153 [2021-12-06 22:03:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:03:25,297 INFO L470 AbstractCegarLoop]: Abstraction has 276926 states and 476127 transitions. [2021-12-06 22:03:25,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 15.571428571428571) internal successors, (109), 8 states have internal predecessors, (109), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 22:03:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 276926 states and 476127 transitions. [2021-12-06 22:03:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-06 22:03:25,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:03:25,931 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:03:25,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:03:26,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:03:26,133 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:03:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash 405333270, now seen corresponding path program 1 times [2021-12-06 22:03:26,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:26,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454354147] [2021-12-06 22:03:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:26,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:03:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:03:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:03:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:03:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:03:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:03:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:03:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:03:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:03:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:03:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:03:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:03:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:03:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:03:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:03:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:03:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:03:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:03:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 22:03:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 22:03:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:03:26,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:26,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454354147] [2021-12-06 22:03:26,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454354147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:26,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:26,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 22:03:26,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387330912] [2021-12-06 22:03:26,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:26,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:03:26,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:03:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:03:26,313 INFO L87 Difference]: Start difference. First operand 276926 states and 476127 transitions. Second operand has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (22), 11 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:03:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:43,913 INFO L93 Difference]: Finished difference Result 543162 states and 1038250 transitions. [2021-12-06 22:03:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:03:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (22), 11 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 194 [2021-12-06 22:03:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:45,303 INFO L225 Difference]: With dead ends: 543162 [2021-12-06 22:03:45,304 INFO L226 Difference]: Without dead ends: 278765 [2021-12-06 22:03:45,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:03:45,788 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 2060 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 1257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:45,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2060 Valid, 2696 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1257 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 22:03:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278765 states. [2021-12-06 22:04:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278765 to 276912. [2021-12-06 22:04:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276912 states, 231196 states have (on average 1.57156265679337) internal successors, (363339), 231019 states have internal predecessors, (363339), 45581 states have call successors, (45581), 103 states have call predecessors, (45581), 134 states have return successors, (74791), 45806 states have call predecessors, (74791), 45573 states have call successors, (74791) [2021-12-06 22:04:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276912 states to 276912 states and 483711 transitions. [2021-12-06 22:04:06,188 INFO L78 Accepts]: Start accepts. Automaton has 276912 states and 483711 transitions. Word has length 194 [2021-12-06 22:04:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:04:06,188 INFO L470 AbstractCegarLoop]: Abstraction has 276912 states and 483711 transitions. [2021-12-06 22:04:06,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 5 states have internal predecessors, (129), 3 states have call successors, (22), 11 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:04:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 276912 states and 483711 transitions. [2021-12-06 22:04:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 22:04:06,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:04:06,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-12-06 22:04:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 22:04:06,727 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:04:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:04:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1452919477, now seen corresponding path program 1 times [2021-12-06 22:04:06,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:04:06,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307340997] [2021-12-06 22:04:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:06,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:04:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:04:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:04:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:04:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:04:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:04:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:04:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:04:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:04:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:04:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:04:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:04:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:04:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:04:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:04:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:04:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:04:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:04:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:04:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 22:04:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:04:06,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:04:06,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307340997] [2021-12-06 22:04:06,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307340997] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:04:06,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023733799] [2021-12-06 22:04:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:06,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:04:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:04:06,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:04:06,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:04:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:07,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:04:07,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:04:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:04:07,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:04:07,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023733799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:04:07,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:04:07,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-12-06 22:04:07,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415377636] [2021-12-06 22:04:07,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:04:07,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:04:07,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:04:07,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:04:07,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:04:07,177 INFO L87 Difference]: Start difference. First operand 276912 states and 483711 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:04:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:04:21,618 INFO L93 Difference]: Finished difference Result 544042 states and 960769 transitions. [2021-12-06 22:04:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:04:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 183 [2021-12-06 22:04:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:04:22,814 INFO L225 Difference]: With dead ends: 544042 [2021-12-06 22:04:22,814 INFO L226 Difference]: Without dead ends: 276936 [2021-12-06 22:04:23,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:04:23,332 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 390 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:04:23,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1009 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:04:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276936 states. [2021-12-06 22:04:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276936 to 276936. [2021-12-06 22:04:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276936 states, 231217 states have (on average 1.5715626446152315) internal successors, (363372), 231043 states have internal predecessors, (363372), 45581 states have call successors, (45581), 103 states have call predecessors, (45581), 137 states have return successors, (81258), 45806 states have call predecessors, (81258), 45573 states have call successors, (81258) [2021-12-06 22:04:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276936 states to 276936 states and 490211 transitions. [2021-12-06 22:04:41,467 INFO L78 Accepts]: Start accepts. Automaton has 276936 states and 490211 transitions. Word has length 183 [2021-12-06 22:04:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:04:41,468 INFO L470 AbstractCegarLoop]: Abstraction has 276936 states and 490211 transitions. [2021-12-06 22:04:41,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:04:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 276936 states and 490211 transitions. [2021-12-06 22:04:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:04:42,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:04:42,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-12-06 22:04:42,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:04:42,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29cda54f-17bf-42bb-8b73-205929091dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:04:42,470 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:04:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:04:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 788996955, now seen corresponding path program 1 times [2021-12-06 22:04:42,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:04:42,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468401612] [2021-12-06 22:04:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:42,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:04:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:04:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:04:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:04:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:04:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:04:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:04:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:04:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:04:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:04:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:04:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:04:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:04:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:04:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:04:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:04:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:04:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:04:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:04:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:04:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:04:42,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:04:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468401612] [2021-12-06 22:04:42,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468401612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:04:42,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:04:42,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 22:04:42,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702619265] [2021-12-06 22:04:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:04:42,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:04:42,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:04:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:04:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:04:42,645 INFO L87 Difference]: Start difference. First operand 276936 states and 490211 transitions. Second operand has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (21), 10 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:05:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:18,353 INFO L93 Difference]: Finished difference Result 832901 states and 1914479 transitions. [2021-12-06 22:05:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 22:05:18,354 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (21), 10 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 184 [2021-12-06 22:05:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:21,987 INFO L225 Difference]: With dead ends: 832901 [2021-12-06 22:05:21,987 INFO L226 Difference]: Without dead ends: 556764 [2021-12-06 22:05:22,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=929, Invalid=3103, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 22:05:22,933 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 4183 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 4775 mSolverCounterSat, 2706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 7481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2706 IncrementalHoareTripleChecker+Valid, 4775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:22,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4193 Valid, 2159 Invalid, 7481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2706 Valid, 4775 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 22:05:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556764 states. [2021-12-06 22:06:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556764 to 552955. [2021-12-06 22:06:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552955 states, 461710 states have (on average 1.571902276320634) internal successors, (725763), 461252 states have internal predecessors, (725763), 90983 states have call successors, (90983), 187 states have call predecessors, (90983), 261 states have return successors, (236244), 91546 states have call predecessors, (236244), 90969 states have call successors, (236244) [2021-12-06 22:06:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552955 states to 552955 states and 1052990 transitions. [2021-12-06 22:06:20,364 INFO L78 Accepts]: Start accepts. Automaton has 552955 states and 1052990 transitions. Word has length 184 [2021-12-06 22:06:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:20,364 INFO L470 AbstractCegarLoop]: Abstraction has 552955 states and 1052990 transitions. [2021-12-06 22:06:20,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (21), 10 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:06:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 552955 states and 1052990 transitions. [2021-12-06 22:06:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:06:22,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:22,284 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:22,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 22:06:22,284 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash 968255428, now seen corresponding path program 1 times [2021-12-06 22:06:22,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:22,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141048707] [2021-12-06 22:06:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:22,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:06:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:06:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:06:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:06:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:06:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:06:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:06:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:06:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:06:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:06:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:06:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:06:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:06:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:06:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:06:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:06:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:06:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:06:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:06:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:06:22,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:22,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141048707] [2021-12-06 22:06:22,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141048707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:22,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:22,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 22:06:22,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401298805] [2021-12-06 22:06:22,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:22,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:06:22,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:06:22,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:06:22,423 INFO L87 Difference]: Start difference. First operand 552955 states and 1052990 transitions. Second operand has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (21), 10 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:07:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:31,660 INFO L93 Difference]: Finished difference Result 1649670 states and 4056835 transitions. [2021-12-06 22:07:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 22:07:31,660 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (21), 10 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 184 [2021-12-06 22:07:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:39,992 INFO L225 Difference]: With dead ends: 1649670 [2021-12-06 22:07:39,992 INFO L226 Difference]: Without dead ends: 1105142 [2021-12-06 22:07:42,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=929, Invalid=3103, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 22:07:42,958 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 2940 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 5730 mSolverCounterSat, 2265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 7995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2265 IncrementalHoareTripleChecker+Valid, 5730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:42,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2950 Valid, 3076 Invalid, 7995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2265 Valid, 5730 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-06 22:07:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105142 states.